How to realize isSortedRange?
I need to ensure that range passed to function is SortedRange to use
binary search. I did something like:
static if(!__traits(compiles,
{
ElementType!(typeof(data)) element;
auto d = data.trisect(element);
}
)) assert(0, DataRange shall be SortedRange);
It works for me, but in fact it checks if the type of 'data' have
'trisect' method and conception of SortedRange is something more than
having 'trisect' method.
I remember there is(?) some way to get general type of template (i.e.
SortedRange instead of SortedRange!int), but can not find it.
Re: How to realize isSortedRange?
Thank you!
extern (C++, N) is it implemented?
This dlang.org/cpp_interface.html says I can do the following
// c++
namespace N {
void someCppFunction();
}
// d
extern (C++, N) void someCppFunction();
but this http://dpaste.dzfl.pl/e2242263e1dc says I can't
Is this feature implemented?
Re: extern (C++, N) is it implemented?
06.08.2014 10:54, Dicebot пишет:
On Wednesday, 6 August 2014 at 06:50:59 UTC, Alexandr Druzhinin wrote:
This dlang.org/cpp_interface.html says I can do the following
// c++
namespace N {
void someCppFunction();
}
// d
extern (C++, N) void someCppFunction();
but this http://dpaste.dzfl.pl/e2242263e1dc says I can't
Is this feature implemented?
Should be in upcoming release.
Ok. Hope it will )
[std.c.stdlib] (malloc(something) is null) or (malloc(something) == 0)?
In D code I do void* data = GC.malloc(...); if(data is null) ... In C code I do void* data = malloc(...); if(data == null) ... What to do when in D code I have void* data = std.c.stdlib.malloc(...); if(data ?) // is null vs == 0
Re: opCmp and unittest as a nested function
09.04.2014 13:45, bearophile пишет: Alexandr Druzhinin: http://dpaste.dzfl.pl/f7364d416cb2 Error appeared when I defined opCmp and now I can't understand what's the reason of the error. Why does tween need access to unittest? Try to use static struct instead of a struct. Bye, bearophile Thank you! It works. But where can I read about this issue?
Re: opCmp and unittest as a nested function
09.04.2014 13:55, bearophile пишет:
And you need to use opEquals:
unittest {
static struct Point2D {
double x, y;
bool opEquals(const Point2D rhs) const {
return false;
}
}
auto p2d0 = Point2D(0, 0);
auto p2d1 = Point2D(1, 0);
assert(tween(p2d0, p2d1, 1 / 3.0) == Point2D(1 / 3.0, 0));
}
opEquals/onHash/opCmp are minefields. I don't know why the D compiler
doesn't add a large amount of errors and warnings to turns this
minefield in something a bit safer.
It would be very nice.
Also use std.math.feqrel to compare floating point values.
Thanks!
Bye,
bearophile
Re: opCmp and unittest as a nested function
09.04.2014 14:13, bearophile пишет: Reading about this issue is not good. What you can read about is how unittests are implemented in D (as functions) and what's the difference between static structs and nonstatic ones when they are defined inside a function. Bye, bearophile I guess I should read how tepmlates work. Tween needs access to unittest.Point2D to be instanciated but Point2D is local?
Re: opCmp and unittest as a nested function
09.04.2014 15:19, bearophile пишет: Alexandr Druzhinin: I guess I should read how tepmlates work. No templates are involved in this code. Bye, bearophile I mean that nested struct Point2D has additional pointer to frame and when compiler tries to instantiate template function 'tweet' it can't do it because in general it doesn't know about this additinal pointer to frame? And making it static I make it a general structure without additions and in this case compiler manages to instantiate 'tweet'?
Re: GtkD - how to install
Show your package.json file and the project structure.
Re: Dub and what it does
23.12.2013 15:04, Russel Winder пишет:
For my (very) early stage GtkD program, my SCons script (using all
source at once) generates a 6MB executable that works. Dub appears to
think that it is creating a .a archive and create 142MB of it. So how to
create an executable with Dub?
I statically build GtkD application using dub and it gives me binary
about 14 Mb in debug mode and stripped binary is about 8 or 6 Mb. But I
built GtkD separately and link against it using the following package.json:
{
name: renderer,
targetType: library,
versions: [
Derelict3,
gl3n,
],
libs: [
gtkd-2,
gtkdgl-2,
dl,
DerelictGL3,
DerelictUtil,
DerelictFI,
gl3n,
glamour,
curl,
],
importPaths: [
~/.dub/packages/gtk-d-master/src,
~/.dub/packages/gtk-d-master/srcgl,
~/.dub/packages/derelict-gl3-master/source,
~/.dub/packages/derelict-fi-master/source,
~/.dub/packages/derelict-util-1.0.0/source,
~/.dub/packages/gl3n-master/,
~/.dub/packages/glamour/,
],
configurations: [
{
name: test,
targetType: executable,
sourcePaths: [test],
}
]
}
So it's a hack, but it works for me - I have fast compilation at least.
I did the following - fetched packages I need, built every package using
dub and copied libs to /usr/local/lib - probably it's better to use path
to libs instead of copying.
Re: GtkD - how to install
23.12.2013 19:19, DLang Beginner пишет: On Monday, 23 December 2013 at 10:08:09 UTC, Alexandr Druzhinin wrote: Show your package.json file and the project structure. https://www.dropbox.com/s/l3wwm84w85h5su2/dlang-gtk1.png https://www.dropbox.com/s/9vs4r9l3lvdw2y1/dlang-gtk2.png You shouldn't create your app inside gtkd structure. Try the following: cd mkdir test cd test dub init copy ~/Desktop/gtkd/source/app.d ./source/ copy ~/Desktop/gtkd/package.json . dub and show what will happen
Re: GtkD - how to install
23.12.2013 22:52, DLang Beginner пишет: On Monday, 23 December 2013 at 13:50:29 UTC, Alexandr Druzhinin wrote: You shouldn't create your app inside gtkd structure. Try the following: cd mkdir test cd test dub init copy ~/Desktop/gtkd/source/app.d ./source/ copy ~/Desktop/gtkd/package.json . dub and show what will happen Yeah, that worked! Application successfully compiled. But when I try start it, I'm getting another error because I don't have libgdkglext-3.0 library. object.Exception@../../.dub/packages/gtk-d-master/src/gtkc/Loader.d(127): Library load failed: libgdkglext-3.0.so.0 Either build this libraries like me or try to change dependency in package.json: gtk-d: ~master = gtk-d:gtkd: ~master You get error because your app try to use opengl extention for gtk, but this extension isn't provided by default for gtk3. I solved this problem for me, but I spent much time and frankly can't remember my steps. But if you don't need opengl you can use only subpackage of gtkd as I write above.
Re: GtkD - how to install
23.12.2013 23:50, DLang Beginner пишет: On Monday, 23 December 2013 at 16:20:24 UTC, Alexandr Druzhinin wrote: 23.12.2013 22:52, DLang Beginner пишет: Either build this libraries like me or try to change dependency in package.json: gtk-d: ~master = gtk-d:gtkd: ~master You get error because your app try to use opengl extention for gtk, but this extension isn't provided by default for gtk3. I solved this problem for me, but I spent much time and frankly can't remember my steps. But if you don't need opengl you can use only subpackage of gtkd as I write above. OH YES! No, I don't need OpenGL, so I changed dependency and it works fine! Thank you so much! I 3 D and it's community. :) You're welcome!
Re: const char* or const(char)* when porting C headers?
22.12.2013 11:06, Alexandr Druzhinin пишет: 22.12.2013 07:47, Gary Willoughby пишет: When porting C headers which include function declarations with using char* types. Is it best to use const char* or const(char)* as the type in the D declaration? C vs D const char* == const(char)* const char const* == const char* Yes, the last line should be const char * const == const char* thanks to Benjamin IIRC in D qualificator is applied to the right part of statement if there is no the parantheses and to part inside the parantheses if they exists. Important thing is that in D qualificators are transitive. It makes type system more robust (from POV immutability), but doesn't complete it, sadly.
Re: const char* or const(char)* when porting C headers?
22.12.2013 07:47, Gary Willoughby пишет: When porting C headers which include function declarations with using char* types. Is it best to use const char* or const(char)* as the type in the D declaration? C vs D const char* == const(char)* const char const* == const char*
selective import
Hi all.
How to use use selective imports more effectively? I have two modules
foo and bar:
module foo;
class Foo {}
module bar;
import foo: Foo;
class Bar
{
private Foo foo_;
this(Foo foo)
{
foo_ = foo;
}
}
Now I add module baz that use both modules above. How to import foo and
bar - everything or only 'the topmost' one, bar?
module baz;
import bar: Bar;
import foo: Foo;
or
import bar: Bar, Foo; // also in bar import of foo.Foo should be public
of course
I don't see difference, but it doesn't mean it doesn't exist. What do
you think about it?
Re: selective import
05.12.2013 20:34, Dicebot пишет: On Thursday, 5 December 2013 at 11:17:18 UTC, Alexandr Druzhinin wrote: I don't see difference, but it doesn't mean it doesn't exist. What do you think about it? It depends on how bar uses foo. You should do public import of symbols from foo if they are required to interact with bar public API. If foo is only used as part of internal implementation, it should be kept private and both modules imported explicitly. Third module uses both Bar and Foo. So I should either import every module individually, or import Bar only but Bar should publicly import Foo - that's the question.
Re: selective import
05.12.2013 20:43, Dicebot пишет: It does not matter what third module uses, it is purely about relation between foo and bar. If foo symbols are not necessary part of public bar API, third module will import both. If they are, bar will import foo publicly. Pretty simple. I realized.
Re: shared phobos 2.064, ubuntu 12.04
29.11.2013 21:58, Jordi Sayol пишет: El 29/11/13 07:55, Alexandr Druzhinin ha escrit: I recompile old project with dmd 2.064 and get the runtime error: Fatal Error while loading '/usr/lib/x86_64-linux-gnu/libphobos2.so.0.64': The module 'std.path' is already defined in 'bin64/workstation-x86-sdl_64'. How can I avoid this `collision`? This is a known issue: https://d.puremagic.com/issues/show_bug.cgi?id=11543 The only workaround I know is to link against static phobos library. Thank for info. But linking with static version causes libcurl linking troubles... :(
shared phobos 2.064, ubuntu 12.04
I recompile old project with dmd 2.064 and get the runtime error: Fatal Error while loading '/usr/lib/x86_64-linux-gnu/libphobos2.so.0.64': The module 'std.path' is already defined in 'bin64/workstation-x86-sdl_64'. How can I avoid this `collision`?
Re: genetically modified slices - is it possible?
16.11.2013 18:38, Jonathan M Davis пишет: Well, if you want to get a slice which refers to the same thing as that slice but includes elements which are in what is being sliced but which aren't in that slice, you can only get the slice that you want be reslicing whatever the slices came from. So, that means that you have to have a range which refers to all of the elements that you want your target range to refer to and possibly more and then either slice that range to exactly the elements that you want or pop off elements until you get the range that you want. Doing that generally requires knowing how many elements to pop off or the indices to slice, which basically means that you have to keep track of indices. In general, it doesn't work very well to increase a range so that it covers more elements. They're designed to be reduced, not increased, and so the more D way of doing things with ranges essentially goes against what you're trying to do, forcing you to come at the problem from a different angle. And in this case, it sounds like that probably means keeping track of indices. - Jonathan M Davis Thanks for reply. It shows that there are different tools for different jobs and I should use appropriate tool for specific job.
genetically modified slices - is it possible?
I'd like to get slice that's consist of begining one other slice and end of yet another slice (all slices belong to the same array of course). Is it possible? With iterators it's simple, but I can't manage do it with slices. http://dpaste.dzfl.pl/443cd4a1
Re: genetically modified slices - is it possible?
15.11.2013 22:09, Adam D. Ruppe пишет: You could make it work like this: auto slice3 = array[ slice1.length + (slice1.ptr - array.ptr) .. (slice2.ptr - array.ptr)]; Since the slices all start into array somewhere, subtracting the pointers gives their start index. Thank you very much! I forget about .ptr. What about ranges in general? They haven't .ptr.
Re: genetically modified slices - is it possible?
15.11.2013 22:13, bearophile пишет: Alexandr Druzhinin: A simple solution is to keep two indexes, and use them to find the slices when you need them. I did it the first. But then I decided to make it more D-ish and stumbled upon the issue. Wasn't it wrong decision and would be better to stay with indices?
Object construction and this
Could somebody explain why this http://dpaste.dzfl.pl/248262b9 return this: Foo: 7FBFD59A50 7FBFD59A80 Bar: 7FBFD59A58 7FBFD59A88 Why this value in ctor is different from this value out of ctor if ctor gets an argument?
Re: Object construction and this
10.11.2013 23:22, Benjamin Thaut пишет:
Am 10.11.2013 17:06, schrieb Alexandr Druzhinin:
Because in D Classes are reference types. That means the code you wrote
is equivalent to the following C++ source:
class Foo
{
public:
Foo(Object* o)
{
printf(%x\n, this); // print a Foo**
}
}
class Bar
{
public:
Bar()
{
printf(%x\n, this); // print a Bar**
}
}
void main()
{
Object* o = new Object;
Foo* foo = new Foo(o);
printf(%x\n, foo); // print a Foo**
Bar* bar = new Bar();
printf(%x\n, bar); // print a Bar**
}
My best guess would be that you wanted to pass this instead of this
to writeln as weel as bar instead of bar etc.
Kind Regards
Benjamin Thaut
Yes, of course I should pass this instead of this, thanks. I was
looking for bug in wrong place - and using let me hope I found it. :)
But kind people didn't let me get up on the wrong way. Thanks!
casting issue
May I cast like:
struct Point
{
float x, y, z;
float r, g, b, a;
}
Point[] points;
void foo(float[] float_array) {};
foo(cast(float[]) points); // is it safe?
May be more elegant way do express this exists?
Thanks
Re: casting issue
25.10.2013 02:08, Adam D. Ruppe пишет:
On Thursday, 24 October 2013 at 17:59:03 UTC, Alexandr Druzhinin wrote:
foo(cast(float[]) points); // is it safe?
Two options would be to make the points itself be a float[] with the
names just properties into the index:
struct Point {
float[7] data;
ref float x() { return data[0]; }
ref float y() { return data[1]; }
// etc etc etc
}
then to use it, just pass point.data[] instead of casting.
Or you could also do a union:
struct Point {
union {
float[7] data;
struct {
float x,y,z,r,g,b,a;
}
}
}
and again, pass point.data[] instead of casting it, while continuing to
use the other members normally.
These are both well defined so are less likely to break than the cast.
I thought to use union, but using struct with properties is good to
know. Thanks for sharing!
Re: Changing elements during foreach
21.10.2013 17:31, Krzysztof Ciebiera пишет:
Is the following compiler behavior consistent with language specification?
import std.stdio;
void main()
{
int a[][] = [[1,2,3]];
foreach(x; a)
{
x[0] = 0;
x ~= 4;
}
writeln(a);
}
I understand why thw program could output [1,2,3] (like in C++ without
) or [0,2,3,4] (python, C++ ref). But [0,2,3]? It was unpleasant surprise.
It's expected.
foreach(ref x; a) == C++ with
but without ref you get the first element of a - i.e. [1, 2, 3] then set
x[0] = 0 so you get [0, 2, 3]. But when you append 4 you append it to
local copy of x - because there is no 'ref'. So your local copy of x
became [0, 2, 3, 4] but when scope is gone you get unmodified copy of a
with old array [0, 2, 3]. Changing the first element without ref
possible because you modify inner array which is reference itself.
Re: Changing elements during foreach
21.10.2013 17:55, Krzysztof Ciebiera пишет:
On Monday, 21 October 2013 at 10:41:38 UTC, Alexandr Druzhinin wrote:
21.10.2013 17:31, Krzysztof Ciebiera пишет:
void main()
{
int a[][] = [[1,2,3]];
foreach(x; a)
{
x[0] = 0;
x ~= 4;
}
writeln(a);
}
...
) or [0,2,3,4] (python, C++ ref). But [0,2,3]? It was unpleasant
surprise.
It's expected.
foreach(ref x; a) == C++ with
but without ref you get the first element of a - i.e. [1, 2, 3] then
set x[0] = 0 so you get [0, 2, 3]. But when you append 4 you append it
to local copy of x - because there is no 'ref'.
So, when exactly my local copy of data should be created? Now it is
created during appending element to an array (when I switch instructions
order, first append x ~= 4, then set x[0] to 0, as a result I get
[1,2,3]). Maybe I should get a warning (like when hiding variable from
outer scope)?
If you switch instruction order you create local copy and then set x[0]
in local copy so original is unchanged. But local copy creating depends
on several thing and happens not every appending in general. Your way is
not D-ish one. What do you want to do?
Re: unsigned interger overflow
02.10.2013 12:41, Jonathan M Davis пишет: On Wednesday, October 02, 2013 12:32:24 Alexandr Druzhinin wrote: Is it safe to replace code: uint index; // do something index++; if(index == index.max) index = index.init; by the following code uint index; // do something index++; /// I use unsigned int so uint.max changed to 0 automagically Well, not quite. Your first one skips uint.max. It goes from uint.max - 1 to 0, whereas the second one goes from uint.max to 0. So, they're subtly different. But yes, incrementing the maximum value of an unsigned integral type is guaranteed to wrap around to 0. Signed integers are of course another matter entirely, but it's guaranteed to work with unsigned integers. - Jonathan M Davis Thanks for clarification.
code formatting issue
I'm curious what is the best way to code like this: // request_id zoom x y pathurl auto msg = receiveOnly!(size_t, zoom, uint, uint, string, string)(); or like this auto msg = receiveOnly!( typeof(request_id), typeof(zoom), typeof(x), typeof(y), typeof(path), typeof(url) )(); Or may be I'm worrying about nonsense and better I'd start thinking about more useful things? :)
Re: code formatting issue
02.10.2013 22:47, bearophile пишет: It's often a good idea to use typeof to keep the code more DRY and safer. I'm sure keeping the code dry and clean is very good idea, but using typeof is rather verbose and just is unusual and verbose a little bit. Another possible solution is to put the variables in some kind of tuple, take its types and use them with a trailing [] to pass them all to receiveOnly. Bye, bearophile Something like this: alias Tuple!( typeof(request_id), typeof(zoom), typeof(x), typeof(y), typeof(path), typeof(url) ) TileDescription; // wait for tile descripton to process auto msg = receiveOnly!TileDescription(); ? I didn't understand about trailing []
unsigned interger overflow
Is it safe to replace code: uint index; // do something index++; if(index == index.max) index = index.init; by the following code uint index; // do something index++; /// I use unsigned int so uint.max changed to 0 automagically Thanks in advance
curl linux
I use curl in my application. If I link it with -lcurl - symbols are undefined (libcurl3 installed), if I link with -lphobos2 - it links. So curl is linked with libphobos2.so? But what to do if I need static linking? (ubuntu 12.04 x86_64, dmd 2.063.2)
Throwable catching
catching Throwable is wrong. But is it wrong if I used it in separate
thread to prevent thread dying like:
static void run()
{
while(true)
{
try
{
/// do work
...
// interacting with parent
auto msg = receiveTimeout(dur!msecs(1),
(string command)
{
/// process command from parent
if(some_condition_is_true)
break; // finish
// execution
}
);
}
catch(Throwable t)
{
/// some diagnostic message
}
}
}
...
auto child = spawn(run);
...
?
Re: Throwable catching
28.09.2013 15:50, Jonathan M Davis пишет: It's just as wrong to catch Throwable there is at is anywhere. If you do that you'll catch Errors, and Errors are _supposed_ to kill your program. They indicate that something bad enough has occurred that it's better to terminate your program than continue. So, yes, what you're doing will keep the thread from dying, but if you get an Error, you want to shut your program down, not try and keep it running. So, maybe catching Throwable would make sense if you had to then tell the other thread to terminate, but should rethrow the Throwable afterwards and let the thread die. - Jonathan M Davis Just to clear - in my case child thread processes parent commands like a worker and every loop iteration isn't correlated with others before and after so I thought that just new iteration resets bad application state caused by Error - I was wrong?
Re: curl linux
28.09.2013 17:06, Jordi Sayol пишет: On 28/09/13 10:28, Alexandr Druzhinin wrote: I use curl in my application. If I link it with -lcurl - symbols are undefined (libcurl3 installed), if I link with -lphobos2 - it links. So curl is linked with libphobos2.so? But what to do if I need static linking? (ubuntu 12.04 x86_64, dmd 2.063.2) To link against libcurl (-lcurl) you need to install libcurl development files. On Ubuntu, install one of these three packages: libcurl4-openssl-dev, libcurl4-gnutls-dev or libcurl4-nss-dev. For libcurl static linking you should link against all libraries that libcurl depends on. Thank you for info. I have installed libcurl4-gnutls-dev - the same happens, symbols are undefined. But with -lphobos2 it links... Why linker don't find these symbols if libs are installed? Should I pass to linker some additional info in this case?
Re: Throwable catching
Thank you for info! I will redesign.
Re: curl linux
28.09.2013 20:14, Jordi Sayol пишет: Can I see your full command line please? $ dmd -lcurl I use dub, but I did rdmd version: rdmd --build-only -I/home/drug/.dub/packages/derelict-master/import -I/home/drug/.dub/packages/glamour-master -version=Derelict3 -version=gl3n -I/home/drug/.dub/packages/gl3n-master/ -I/home/drug/3rdparties/cairoD/src -I/home/drug/.dub/packages/arsd-master -version=CAIRO_HAS_PNG_FUNCTIONS -L-lphobos2 -L-L/home/drug/3rdparties/cairoD -L-lcairoD -L-lcairo -L-ldl -ofbin/geoviewer src/app.d If I change -L-lphobos2 на -L-lcurl I get: /usr/lib/x86_64-linux-gnu/libphobos2.a(curl.o): In function `_D3std3net4curl4Curl19_sharedStaticCtor34FZv': std/net/curl.d:(.text._D3std3net4curl4Curl19_sharedStaticCtor34FZv+0xf): undefined reference to `curl_global_init' /usr/lib/x86_64-linux-gnu/libphobos2.a(curl.o): In function `_D3std3net4curl4Curl19_sharedStaticDtor35FZv': std/net/curl.d:(.text._D3std3net4curl4Curl19_sharedStaticDtor35FZv+0x5): undefined reference to `curl_global_cleanup' /usr/lib/x86_64-linux-gnu/libphobos2.a(curl_144c_140.o): In function `_D3std3net4curl4HTTP4Impl6__dtorMFZv': std/net/curl.d:(.text._D3std3net4curl4HTTP4Impl6__dtorMFZv+0x19): undefined reference to `curl_slist_free_all' ... and so on. That is in this case I have static linking but curl symbols are not definded somehow.
Re: non virtual interfaces
20.09.2013 12:45, Ali Çehreli пишет:
On 09/19/2013 10:31 PM, Alexandr Druzhinin wrote:
if I use protected instead of private in interface like:
private member functions are non-virtual.
But I just use code example from TDPL russian edition. And TDPL says
clearly that (un)transmogrify() are private and CardboardBox _maynot_
make (un)transmogrify() non-private - this is highlighted as compiler
support of NVI idiom. Is it wrong example, I guess?
interface Transmogrifier
{
final void thereAndBack()
{
transmogrify();
untransmogrify();
}
protected:
void transmogrify();
void untransmogrify();
}
If they were non-virtual (i.e. private), the calls to transmogrify() and
untransmogrify() from thereAndBack() would be bound to
Transmogrifier.transmogrify and Transmogrifier.untransmogrify at compile
time. That happens and the linker cannot find their definitions.
I see. Thanks, I understand it now better
class CardboardBox: Transmogrifier
{
override protected void transmogrify() { }
override void untransmogrify() {}
}
it compiles, but why does compiler permit making untransmogrify() be
public?
It is up to CardboardBox to decide whether untransmogrify() is public or
not. Note that untransmogrify() is still protected when objects are used
through the Transmogrifier interface. However, when an object is known
to be a CardboardBox so that it is being used through the CardboardBox
interface, it is not bound to be a Transmogrifier at that point. Yes,
CardboardBox inherits from Transmogrifier but it is CardboardBox's
interface that is being used at that point so it decides.
Thanks again. So there is no compiler support for NVI idiom? Because if
CardboardBox may define its own (un)transmogrify() - TDPL says it
possible only if (un)transmogrify() have other signatures.
How can I prohibit this? May be it just unrealized yet?
You cannot prohibit from Transmogrifier.
Ali
Unfortunately I tried to use NVI for it namely.
Re: non virtual interfaces
20.09.2013 23:09, Jonathan M Davis пишет: You can use NVI with classes just fine just so long as you use protected rather than private, but making it private there won't work either, because private is never virtual (and it wouldn't really help you any if it were, because while the base class private function might not be callable, the derived class one would still be callable by the derived class, so trying to prevent the virtual function in NVI from ever being called outside of the base class is broken in the first place - including in C++ where it was originally devised). What NVI helps with is making it so that the public function being called as part of the API is non-virtual, allowing you to do stuff before and after the hidden virtual function being called, but the derived classes can still call their implementation of the hidden, virtual function. - Jonathan M Davis I see. Thanks for clarifying.
non virtual interfaces
Hello all.
I try to use NVI and failed with a snippet from TDPL:
interface Transmogrifier
{
final void thereAndBack()
{
transmogrify();
untransmogrify();
}
private:
void transmogrify();
void untransmogrify();
}
class CardboardBox: Transmogrifier
{
override private void transmogrify() { }
override void untransmogrify() {}
}
int main()
{
auto cb = new CardboardBox();
return 0;
}
doesn't compile with log info:
src/test.d(16): Error: function test.CardboardBox.transmogrify cannot
override a non-virtual function
src/test.d(17): Error: function test.CardboardBox.untransmogrify does
not override any function, did you mean to override
'test.Transmogrifier.untransmogrify'?
It rather well differs from what I expected reading TDPL. Something is
changed very much or I just missed something?
Re: non virtual interfaces
if I use protected instead of private in interface like:
interface Transmogrifier
{
final void thereAndBack()
{
transmogrify();
untransmogrify();
}
protected:
void transmogrify();
void untransmogrify();
}
class CardboardBox: Transmogrifier
{
override protected void transmogrify() { }
override void untransmogrify() {}
}
int main()
{
auto cb = new CardboardBox();
return 0;
}
it compiles, but why does compiler permit making untransmogrify() be
public? How can I prohibit this? May be it just unrealized yet?
Re: may gc free malloced memory?
12.09.2013 14:45, Rene Zwanenburg пишет: On Thursday, 12 September 2013 at 05:59:33 UTC, monarch_dodra wrote: On Thursday, 12 September 2013 at 05:36:31 UTC, Alexandr Druzhinin wrote: Some C function malloc-ed memory. This memory should be freeed much later. I don't want to manually call C function to free this memory in some point later, so may I in some way ask gc to free this memory using something like addRoot(for instance) or else or the true way is to copy malloc-ed memory to gc-allocated memory and free malloc-ed memory at once? Like: ubyte data* = cfunction_allocates_memory(); auto gcmemory = data[0..length(data)]; cfunction_frees_memory(data); // work with gcmemory only or ubyte data* = cfunction_allocates_memory(); GC.someUnknownToMeFunction(data); // now gc will control this memory No. Only free can be used with malloc. The memory comes from distinct pools. Another option could be to use GC.malloc, and memcpy your old mmory into your new memory, free the old memory, and use your new block. GC.malloc, as the name suggests, is a malloc, but done by the GC. You could also use some kind of helper class. Perhaps Phobos has a facility for this, but to illustrate the idea: http://dpaste.dzfl.pl/805a61c0 However note that the memory isn't guaranteed to be freed this way. Only if the GC heap gets full and the collector runs. Ok. I just think that copying from one pool to another is excessive and may be there is a some way to avoid it. Thanks for the answers!
may gc free malloced memory?
Some C function malloc-ed memory. This memory should be freeed much later. I don't want to manually call C function to free this memory in some point later, so may I in some way ask gc to free this memory using something like addRoot(for instance) or else or the true way is to copy malloc-ed memory to gc-allocated memory and free malloc-ed memory at once? Like: ubyte data* = cfunction_allocates_memory(); auto gcmemory = data[0..length(data)]; cfunction_frees_memory(data); // work with gcmemory only or ubyte data* = cfunction_allocates_memory(); GC.someUnknownToMeFunction(data); // now gc will control this memory
TDPL, std.concurrency and OwnerFailed
Hello I try to get known if daughter thread finished its work using OwnerFailed exception catching like TDPL says, but std.concurrency has no such symbol. So, something changed. Can somebody help me with this case - finding if a child thread finished/terminated? I know about spawnLinked, but I want to get known about child state when sending, not receiving, because in the last case I don't know what of linked child threads is terminated.
Re: TDPL, std.concurrency and OwnerFailed
04.09.2013 0:58, Ali Çehreli пишет:
One way is, the child can send a special message (even the exception
itself) when it terminates:
// ... at the worker ...
try {
// ...
} catch (shared(Exception) exc) {
owner.send(exc);
}},
This implies some protocol, at least simplest, but hand-made,
non-standard protocol - I'd like to avoid this if possible and use
standart ways
Beware though: There has been problems with disappearing workers even
with that code. The reason is, the code above does not catch Errors.
However, if it did catch by Error (or, more generally by Throwable),
then in theory, it shouldn't trust program state sufficiently to be able
to send a message to the owner.
But if after catching Throwable and sending a message to the parent I
stop the worker - I won't be needed to trust a worker state, because it
won't be used more? Or again I need some protocol to avoid this case?
I know about spawnLinked, but I want to get known about child state when
sending, not receiving, because in the last case I don't know what of
linked child threads is terminated.
I don't think it is a complete solution: Even if you think the child is
healthy when you send the message, it may terminate right after
receiving it.
You're absolutely right. So, ultimately I need some communication
protocol. It would be very nice if phobos has something like message
pattern in zeromq.
Re: How do you profile your apps under windows?
10.08.2013 00:59, H. S. Teoh пишет: On Fri, Aug 09, 2013 at 11:39:41PM +0700, Alexandr Druzhinin wrote: -profile switch doesn't work for me (nothing happens), so I'm curious how to profile? You've to run your program first. It will create a bunch of extra files in your current working directory that contains the profile results. T Of course I run the program first. When the program was simpler it worked fine. But at the some moment I tried to profile it again but there were no profile results generated. More over now my app just hangs up after finishing (my code) execution somewhere in druntime kingdom. To try gprof I installed ubuntu 12.04 (newer versions didn't install from flushdisk) and also installed gdc-4.8 (native gdc-4.6 doesn't compile my code) from a package (compiling gdc from source fails, playing with configure options just wasted several hours of my spare time) and even build my app and became exciting that now I would get opportunity to profile using gprof but my app just crashed with dumping without any informative message. I tried to use gdb (I'm a noob with it) and found that it crashed somewhere about exit from static ctors - I'm not sure I interpreted gdb output correctly. So now I have a choice - to wait when good and smart guys solve these problems either with dmd -profile or gdc code generating and try to work around myself - probably gdc codegen isn't the real reason. Here I'm sitting and making decision what to do further... But nevertheless thanks to all who made the universe more beautiful and handy by means of D language and its infrastructure! Thank you guys!
Re: How do you profile your apps under windows?
10.08.2013 01:30, Gary Willoughby пишет: On Friday, 9 August 2013 at 16:39:41 UTC, Alexandr Druzhinin wrote: -profile switch doesn't work for me (nothing happens), so I'm curious how to profile? I had the same problem on Linux where -profile didn't seem to produce anything. I had a program which ran an infinite loop running as a daemon. When compiled and run using -profile i'd let it run for a bit then kill it and nothing was produced. After much head scratching i implemented a timer in the program that only ran in debug mode and after the timer expired i raised an assert fail: assert(false); This exited the program and produced the trace file which i could then examine. I guess killing the process also killed the profiler and so never gave me the report. Tried this approach but the app hangs up somewhere in druntime code after my code execution finished.
How do you profile your apps under windows?
-profile switch doesn't work for me (nothing happens), so I'm curious how to profile?
Re: Exception isn't thrown as expected
31.05.2013 8:56, Alexandr Druzhinin пишет:
Hello
I have code like this:
class SomeClass {
ubyte[] data_;
...
auto getObjectType() const {
if(data_ is null) {
writeln(throwing);
throw new Exception(Here the exception should be thrown!);
}
KeyHeaderHelper value_header;
value_header.ptr_ = cast(ubyte*) data_.ptr;
return value_header.object_type;
}
}
When data_ is null the application just prints throwing and hangs up
without an exception throwing. I don't know how to handle this. May be I
did something wrong? If so then what?
Rephrase my question - I have a function getObjectType, that throws an
exception. Unittest is ok. But in more complex use case, this function
doesn't throw exception and just hangs up. If I brace the function call
by try/catch then an exception is throw again. But I guess exception
have to be thrown in any case.
Re: Exception isn't thrown as expected
04.06.2013 19:18, Alexandr Druzhinin пишет:
31.05.2013 8:56, Alexandr Druzhinin пишет:
Hello
I have code like this:
class SomeClass {
ubyte[] data_;
...
auto getObjectType() const {
if(data_ is null) {
writeln(throwing);
throw new Exception(Here the exception should be thrown!);
}
KeyHeaderHelper value_header;
value_header.ptr_ = cast(ubyte*) data_.ptr;
return value_header.object_type;
}
}
When data_ is null the application just prints throwing and hangs up
without an exception throwing. I don't know how to handle this. May be I
did something wrong? If so then what?
Rephrase my question - I have a function getObjectType, that throws an
exception. Unittest is ok. But in more complex use case, this function
doesn't throw exception and just hangs up. If I brace the function call
by try/catch then an exception is throw again. But I guess exception
have to be thrown in any case.
Oh, no.. If I do
...
try {
auto foo = some_class_instance.getObjectType();
}
catch(Throwable t) {
writeln(t.msg); // print exception, no hanging
throw t;// hangs again
}
...
all happens in the main thread.
Re: Exception isn't thrown as expected
03.06.2013 12:26, Ali Çehreli пишет: On 06/02/2013 08:23 PM, Alexandr Druzhinin wrote: I found that after calling std.concurrency.spawn() template - exceptions stop throwing, but if I add little delay in beginning of spawned thread about 100 ms - it'd works again and exceptions would be thrown again... :( Is the exception thrown by a child thread? If so, perhaps that is causing the child to terminate. Also, the parent cannot catch a child's exception automatically. Ali no, the main thread do it. But even if child thread throws an exception, should it print some diagnostic message to clear that it crashed or no? Because my app just hangs up and nothing more, no message, no complaints, nothing.
Exception isn't thrown as expected
Hello
I have code like this:
class SomeClass {
ubyte[] data_;
...
auto getObjectType() const {
if(data_ is null) {
writeln(throwing);
throw new Exception(Here the exception should be thrown!);
}
KeyHeaderHelper value_header;
value_header.ptr_ = cast(ubyte*) data_.ptr;
return value_header.object_type;
}
}
When data_ is null the application just prints throwing and hangs up
without an exception throwing. I don't know how to handle this. May be I
did something wrong? If so then what?
Re: Exception isn't thrown as expected
31.05.2013 8:59, Adam D. Ruppe пишет:
three questions come to mind:
1) what operating system and 32 bit or 64 bit?
2) what D compiler?
3) are you sure you didn't catch the exception somewhere up the chain
and silence the message that way?
1) win7 64
2) dmd 32
3) I don't catch explicitly. To ensure it isn't catch some way
implicitly I just throw Exception without condition and it is thrown as
expected
auto getObjectType() const {
throw new Exception(Here the exception should be thrown!); //
works as expected
KeyHeaderHelper value_header;
value_header.ptr_ = cast(ubyte*) data_.ptr;
return value_header.object_type; // if data isn't null it hangs
up here
}
moreover, when I provide data_ always have some length, the application
starts hangin at return operator. I've met something like this behaviour
(I mean silent hanging up) earlier working with std.concurrency, but I
found some workaround. Now I dont know what to do.
Re: Exception isn't thrown as expected
31.05.2013 10:49, Marco Leise пишет:
The code that you haven't shown reads:
int main(string[] args) {
SomeClass c;
auto t = c.getObjectType();
return 0;
}
You have to fix that!
You mean I didn't initialize c? If even so, it should throw an
exception, no hanging, I think. Nevertheless, a class instance is
correct. I'll try to reduce code.
Re: Can't find GLU symbols when compiling SimpleGL.d found in GtkD/demos
Try this http://gtkd.org/Downloads/GtkDGL.zip
Re: GtkD HelloWorld app crashes with exception
18.05.2013 14:53, Enjoys Math пишет: I re-installed DMD 2.062 and now it's a compiler error: -- Build started: Project: ConsoleApp3, Configuration: Debug Win32 -- Building Debug\ConsoleApp3.exe... OPTLINK (R) for Win32 Release 8.00.12 Copyright (C) Digital Mars 1989-2010 All rights reserved. http://www.digitalmars.com/ctg/optlink.html C:\D\dmd2\windows\bin\..\lib\GtkD.lib(glib) Error 42: Symbol Undefined _D3std3utf10decodeImplFNaNePxakKkZw (pure @trusted dchar std.utf.decodeImpl(const(char)*, uint, ref uint)) C:\D\dmd2\windows\bin\..\lib\GtkD.lib(glib) Error 42: Symbol Undefined _D6object9Exception6__ctorMFAyaAyakC6object9ThrowableZC9Exception (Exception object.Exception.__ctor(immutable(char)[], immutable(char)[], uint, object.Throwable)) Building Debug\ConsoleApp3.exe failed! Details saved as file://C:\home\Dropbox\Dev\AudioSynth\Tests\ConsoleApp3\ConsoleApp3\Debug\ConsoleApp3.buildlog.html Try to rebuild GtkD if you re-installed dmd. Check if Gtk path is the first in path because can be other application with different version of Gtk
Re: GtkD HelloWorld app crashes with exception
18.05.2013 15:34, Enjoys Math пишет: And the errors are: OPTLINK (R) for Win32 Release 8.00.12 Copyright (C) Digital Mars 1989-2010 All rights reserved. http://www.digitalmars.com/ctg/optlink.html C:\D\dmd2\windows\bin\..\lib\GtkD.lib(ObjectG) Error 42: Symbol Undefined _D4core6memory2GC7addRootFxPvZv (void core.memory.GC.addRoot(const(void*))) C:\D\dmd2\windows\bin\..\lib\GtkD.lib(ObjectG) Error 42: Symbol Undefined _D4core6memory2GC10removeRootFxPvZv (void core.memory.GC.removeRoot(const(void*))) C:\D\dmd2\windows\bin\..\lib\GtkD.lib(glib) Error 42: Symbol Undefined _D4core6memory2GC6qallocFkkZS4core6memory8BlkInfo_ (core.memory.BlkInfo_ core.memory.GC.qalloc(uint, uint)) C:\D\dmd2\windows\bin\..\lib\GtkD.lib(glib) Error 42: Symbol Undefined _D4core6memory2GC6extendFPvkkZk (uint core.memory.GC.extend(void*, uint, uint)) C:\D\dmd2\windows\bin\..\lib\GtkD.lib(glib) Error 42: Symbol Undefined _D4core5bitop3bsrFNaNbkZi (pure nothrow int core.bitop.bsr(uint)) Building Debug\WindowsApp2.exe failed! Your compiler is installed incorrectly and can not find phobos of appropriate version. Check it once again. In your case this error should appear with any other example. Check it too, if you want.
Re: GtkD HelloWorld app crashes with exception
18.05.2013 16:17, Enjoys Math пишет: Then upon continuing I get an infinitely repeating Unhandled exception at 0x in WindowsApp2.exe: 0xC005: Access violation reading location 0x. message box popping up. Did you check that path to Gtk runtime binaries is the first? I guess there is some other application in your path variable that is using different zlib1.dll and when you run your app it load incorrect version that results in what you get. Check you path once again.
Re: GtkD HelloWorld app crashes with exception
18.05.2013 9:52, Enjoys Math пишет: I'm on Windows 7 64-bit and using DMD2, compiling a regular 32-bit windows app using Visual D New Project Windows App and replacing winmain.d with the code below: ... I'm using GtkD-2.2.0 from here: https://code.google.com/p/gtkd-packages/downloads/list and also the 32-bit runtime from there. The output when I click Start Debugging in Visual D is to display a stdout window with some text (that I can't read since it's too fast. I've tried setting breakpoints to no avail), no window is ever displayed. Then in Visual D the output log shows: code First-chance exception at 0x76c6c41f in WindowsApp1.exe: 0xE0440001: 0xe0440001. The program '[3848] WindowsApp1.exe: Native' has exited with code 1 (0x1). /code Thank you for any suggestions. Works fine on my box. You have problem with gtk installation. But I can't specify what's the reason - I downloaded previous binaries. Also I recommend you to experiment with paths - check it out.
Compiler error
during building I get: Assertion failure: 'alignment 0 !(alignment (alignment - 1))' on line 239 in file 'struct.c' abnormal program termination what should I do to help us to catch this?
Re: Compiler error
07.05.2013 0:39, Maxim Fomin пишет: On Monday, 6 May 2013 at 16:37:18 UTC, Alexandr Druzhinin wrote: during building I get: Assertion failure: 'alignment 0 !(alignment (alignment - 1))' on line 239 in file 'struct.c' abnormal program termination what should I do to help us to catch this? 1) search or report to bugzilla 2) debug dmd 3) fix sources 4) prepare pull request Честно сказать, я не в курсе как искать в багзилле - все баги такие разные. Думал, тут все за меня сейчас решат. ;) Понял, будем работать...
Re: Compiler error
07.05.2013 8:55, Alexandr Druzhinin пишет: 07.05.2013 1:40, Maxim Fomin пишет: On Monday, 6 May 2013 at 17:48:58 UTC, Alexandr Druzhinin wrote: 07.05.2013 0:39, Maxim Fomin пишет: On Monday, 6 May 2013 at 16:37:18 UTC, Alexandr Druzhinin wrote: during building I get: Assertion failure: 'alignment 0 !(alignment (alignment - 1))' on line 239 in file 'struct.c' abnormal program termination what should I do to help us to catch this? 1) search or report to bugzilla 2) debug dmd 3) fix sources 4) prepare pull request Честно сказать, я не в курсе как искать в багзилле - все баги такие разные. Думал, тут все за меня сейчас решат. ;) Понял, будем работать... понятно :) Issue 8612 and 8710 looks like your case. Please post there your reduced code. http://d.puremagic.com/issues/show_bug.cgi?id=8612 it looks like 8612 but unfortunatly I found that the error appearance depends on command line arguments - if I compile the file with reduced code without other files of the project it compiles, but with the files - it fails. :( I forgot to mention that the these other files don't need for the reduced code compiling, but nevertheless bug is affected by these files.
[GtkD] How to connect to notify::active signal?
I need to connect to notify::active signal for Switch widget to process changing of its state. The guides say I shouldn't use onActivate signal, but notify:active. But I didn't find a way to do it. Can somebody help with it?
Re: [GtkD] How to connect to notify::active signal?
04.05.2013 1:18, Mike Wey пишет: On 05/03/2013 06:30 PM, Alexandr Druzhinin wrote: I need to connect to notify::active signal for Switch widget to process changing of its state. The guides say I shouldn't use onActivate signal, but notify:active. But I didn't find a way to do it. Can somebody help with it? Are you referring to gtk.Switch ? yes, gtk.Switch if I connect to activate signal by means addOnActivate nothing works. Documentation says I should use notify::active event (it belongs to ObjectG, as I understand?), but I cannot find a way to connect to this signal by means of GtkD.
[GtkD] How to use Glade?
How to use GtkD with Glade? Is some tutorial available? I spent some time trying to use Glade to build non-trivial application, but I do it very inproductive, so I'd like to get some help or I'm afraid it will be lasting for years... For example, if somebody would upload some example of Gtk application, that built with glade and has several typical widgets and signal handlers - it may help very much.
Re: [GtkD] How to use Glade?
03.05.2013 6:12, Carlos пишет: Normally the example looks for builderTest.glade in the directory where the binary is. There one in the GtkD git https://github.com/gtkd-developers/GtkD/blob/master/demos/builder/builderTest.glade You can also specify a different glade file on the commandline, the example code tries to access a wiget named window1 if it's not pressent in the glade file it will print No window? and exit. I can't believe an hour has passed so easy. How do I specify the doferent glade ?, During compilation ? if you mean glade file with different name then answer is yes. but if you just want to use another glade file with the same name then answer is no. this different glade file should has window widget with name window1 but with the rest no other restrictions exist. with glade you can create more complex application easer and after debugging build glade file into your application.
Re: [GtkD] How to use Glade?
03.05.2013 0:43, Mike Wey пишет: There is an small example distributed with GtkD: https://github.com/gtkd-developers/GtkD/blob/master/demos/builder/builderTest.d Oops, didn't see.
Re: [GtkD] How to use Glade?
03.05.2013 7:24, Alexandr Druzhinin пишет: I can't believe an hour has passed so easy. How do I specify the doferent glade ?, During compilation ? if you mean glade file with different name then answer is yes. but if you just want to use another glade file with the same name then answer is no. this different glade file should has window widget with name window1 but with the rest no other restrictions exist. with glade you can create more complex application easer and after debugging build glade file into your application. I was totally wrong - didn't look at code before :( The right answer to your question is you can specify your own glade file into command line as second argument like this: builder /path/to/your/glade/file/your.glade it will be enough
Re: [GtkD] How to use Glade?
03.05.2013 7:55, Carlos пишет: Sorry if this was too wild but this is what I can do at the moment since I don't see a gladeText program which I believe is required for this action I did my guess. code: dmd builderTest.d $(pkg-config --cflags --libs gtkd-2) builder ~/Documents/Glade/builderTest.glade gives error : Error: unrecognized file extension glade - gtkD samples give error but I'm not using the same software from developers I'll try to install by purge all gtkD programs installed by no and trying make install again. Then check if the samples compile right. first build application: dmd builderTest.d $(pkg-config --cflags --libs gtkd-2) then run it: builder ~/Documents/Glade/builderTest.glade
Re: [GtkD] How to use Glade?
03.05.2013 0:43, Mike Wey пишет:
On 05/02/2013 03:58 PM, Alexandr Druzhinin wrote:
How to use GtkD with Glade? Is some tutorial available?
I spent some time trying to use Glade to build non-trivial application,
but I do it very inproductive, so I'd like to get some help or I'm
afraid it will be lasting for years...
For example, if somebody would upload some example of Gtk application,
that built with glade and has several typical widgets and signal
handlers - it may help very much.
There is an small example distributed with GtkD:
https://github.com/gtkd-developers/GtkD/blob/master/demos/builder/builderTest.d
won't it be better to have the simple template to hide cast() using
Builder.getObject():
auto getObjectAs(T)(Builder b, string object_name) {
return cast(T) b.getObject(object_name);
}
?
Re: [GtkD] How to use Glade?
03.05.2013 8:29, Carlos пишет: I got it working now. I'm using the sample code and I made another layout with Glade for GTK+3 and saved it with the same name, so when I compile the file is called and I get the UI I wanted. SO now next step is to learn the signals part, Right ? right. and it's very very simpler than in plain C
Re: does GtkD (win7) support opengl?
developers version of GtkD solves my problem. but GtkD 2.1.1 from download page doesn't. May be remove it from there to avoid such problems?
Re: does GtkD (win7) support opengl?
28.04.2013 20:26, Mike Wey пишет: On 04/28/2013 01:04 PM, Alexandr Druzhinin wrote: developers version of GtkD solves my problem. but GtkD 2.1.1 from download page doesn't. May be remove it from there to avoid such problems? Does it also draw the triangle properly for you? yes, it works out of box as expected. Exception is that after window resizing drawGL() function isn't called and I need to call it explicitly in resize() - don't know is it intended or it is some failure.
Re: does GtkD (win7) support opengl?
27.04.2013 0:57, Mike Wey пишет: Should be working now. Yes, 32bit binary works well (didn't run 64bit). Thank you very much!
Re: does GtkD (win7) support opengl?
24.04.2013 4:02, Mike Wey пишет: I don't think it's the line number. I think i may have this error on my machine once, but not since then. And i can't reproduce it. Could I ask you to build SimpleGL demo, check it works and send binary to me? It can help me in solving my trouble. Thank in advance.
Re: does GtkD (win7) support opengl?
26.04.2013 3:45, Mike Wey пишет: http://gtkd.org/Downloads/SimpleGL.zip After updating dmd the demo no longer draws the triangle, i still need to figure out why. Link is broken
Re: does GtkD (win7) support opengl?
10.04.2013 3:48, Mike Wey пишет: I was able to build gtkglext3 on windows, and i've uploaded a zip file containing the dll's. http://gtkd.org/Downloads/GtkDGL.zip I've also included the static libs for GtkDGL and for 32bits windows two import libraries for opengl and glu, for win64 these are included in the Windows SDK. Thank you very much, Mike! now I have a little time to try gtk again and your help lets me build my SimpleGL demo. But I was forced use my own version of GtkDGL - your' doesn't work. I built it simple just running this from srcgl folder: cd glgdk dmd -lib -ofGlGdk.lib GLConfig.d GLContext.d GLdInit.d GLDrawable.d GLDrawableIF.d GLDrawableT.d GLQuery.d GLWindow.d -I.. -I..\..\src cd .. cd glgtk dmd -lib -ofGlGtk.lib GLCapability.d GLtInit.d GLWidget.d -I.. -I..\..\src cd .. cd gtkglc dmd -lib -ofGtkGlc.lib gl.d glgdk.d glgdktypes.d glgtk.d glgtktypes.d glu.d -I.. -I..\..\src cd .. it created three other libs and these I linked against. Also I was forced to rename: libgdkglext-3.0-0.dll to libgdkglext-win32-3.0-0.dll libgtkglext-3.0-0.dll to libgtkglext-win32-3.0-0.dll Now simplegl building and running but failed with the following: (SimpleGL.exe:4668): GLib-GObject-WARNING **: cannot register existing type `GdkGLConfig' (SimpleGL.exe:4668): GLib-CRITICAL **: g_once_init_leave: assertion `result != 0' failed (SimpleGL.exe:4668): GtkGLExt-CRITICAL **: gtk_widget_set_gl_capability: assertion `GDK_IS_GL_CONFIG (glconfig)' failed object.Error: Access Violation 0x0059ADDC 0x0059AC67 0x77B1B459 in LdrRemoveLoadAsDataTable 0x77B1B42B in LdrRemoveLoadAsDataTable 0x77AD0133 in KiUserExceptionDispatcher 0x004E5E73 0x665228B6 in gtk_main_do_event 0x6860BBCC in g_slice_free1 0x63A45E36 in g_closure_invoke 0x77AEE0F2 in RtlAllocateHeap I think it relevant to Gtk, not GtkD, but it would be very nice if you could help with it too. Google says nothing about it and simplegl.d has only 150 lines, where should I look for 4668th line?
Re: Calculation differences between Debug and Release mode
I'm not sure, but I suspect this is because of 80-bit intermediary float
point operation result. Its precision too excessive and gives us this
inexpectible result. But when you use an intermediary variable this
exessive intermediary result is rounded properly and you get what you
expect. See here - http://d.puremagic.com/issues/show_bug.cgi?id=6531.
The reason is:
float a, b, c, d, foo;
foo = a + b / c;
if (d foo) { // you compare two float value
} else {
}
but:
if (d (a + b / c)) { // you compare float value and 80bit value and
sometimes the result won't be what you expected
} else {
}
in your case in release mode compiler may do some optimization and do
not round value properly but using temp you force do proper rounding
Re: is it bug?
05.04.2013 1:26, Ali Çehreli пишет:
I was wrong. What I found is just a workaround. Created a bug for iota:
http://d.puremagic.com/issues/show_bug.cgi?id=9877
The following program fails when compiled with -m32:
import std.range;
void main()
{
float st = 0.000;
float step = 12.038554191589355;
float en = 999.200012207031250;
iota(st, en, step);
}
Ali
Ali, please, take a look at this http://dpaste.dzfl.pl/44e64eb0
it's code of ctor of iota float point specialization. And it's strange
for me, that pastEnd and (start + count * step) have the same value, but
give different comparing results.
Re: is it bug?
11.04.2013 12:13, Alexandr Druzhinin пишет: Ali, please, take a look at this http://dpaste.dzfl.pl/44e64eb0 it's code of ctor of iota float point specialization. And it's strange for me, that pastEnd and (start + count * step) have the same value, but give different comparing results. it fixes bug (I guess) http://dpaste.dzfl.pl/b9577e70
is it bug?
on win7 64 bits using dmd 2.062 32 bits this code http://dpaste.dzfl.pl /6cca43b5 failed with assert failure: core.exception.AssertError@std.range(5288): Assertion failure but on ubuntu 12.04 64 bits, dmd 2.062 64 bit it compiles and works rather well. May be I missed something important with it?
Re: is it bug?
04.04.2013 21:24, Ali Çehreli пишет: On 04/04/2013 06:27 AM, Alexandr Druzhinin wrote: on win7 64 bits using dmd 2.062 32 bits this code http://dpaste.dzfl.pl /6cca43b5 failed with assert failure: core.exception.AssertError@std.range(5288): Assertion failure but on ubuntu 12.04 64 bits, dmd 2.062 64 bit it compiles and works rather well. May be I missed something important with it? The problem is reproducible on Linux as well if you compile with -m32. The following assert fails in range.d: assert(start + count * step = end); start: 0 count: 83 step: 12.0386 end: 999.2 Even though count * step is seemingly 999.2 as well, due to the inexact nature of floating point calculations the assertion is false. The problem seems to be in your code because your step calculation ignores a remainder. This works: // OLD: step = width / factor; step = (width + factor - 1) / factor; Ali that works, thank you very much! but provide some link to some good article that explains my mistake, I didn't realize it clearly
Re: is it bug?
05.04.2013 0:26, Ali Çehreli пишет:
I was wrong. What I found is just a workaround. Created a bug for iota:
http://d.puremagic.com/issues/show_bug.cgi?id=9877
The following program fails when compiled with -m32:
import std.range;
void main()
{
float st = 0.000;
float step = 12.038554191589355;
float en = 999.200012207031250;
iota(st, en, step);
}
Ali
Thank you, Ali.
will be waiting it will be fixed.
Re: does GtkD (win7) support opengl?
02.04.2013 1:32, Jesse Phillips пишет: Please provide your compile command, it looks like you didn't tell the linker where to find GtkD. cd path/to/GtkD/demos/gl/simple dmd SimpleGL.d -I../../../src -I../../../srcgl ../../../src/GtkD.lib without GtkD.lib there are much more undefined symbols
Re: does GtkD (win7) support opengl?
02.04.2013 21:38, Jesse Phillips пишет: On Tuesday, 2 April 2013 at 06:19:23 UTC, Alexandr Druzhinin wrote: 02.04.2013 1:32, Jesse Phillips пишет: Please provide your compile command, it looks like you didn't tell the linker where to find GtkD. cd path/to/GtkD/demos/gl/simple dmd SimpleGL.d -I../../../src -I../../../srcgl ../../../src/GtkD.lib without GtkD.lib there are much more undefined symbols Ops I was thinking Derelict, I don't think GtkD is dynamically linked, so you'll also need to say where gtk is. but this is compilation error, not runtime or you mean there is another lib I should link against?
Re: does GtkD (win7) support opengl?
03.04.2013 1:08, Jesse Phillips пишет: GtkD is only bindings for the actual GTK library, that library must be installed to use GtkD. GtkD being using static linking (at compile time) you need to tell the linker you want the GTK library too. The best way to do this I don't know. The website suggest dgen to build programs after install: https://github.com/gtkd-developers/GtkD/wiki/Installing-on-Windows If you were in Linux you likely would only add -L-lgtk to the compiler command. I'm totally agree that I need Gtk runtime - I install it before and set path to it properly. I build GtkD using dgen.d and link against it. But nevertheless I have undefined symbols and I don't know where to find them. Gtk application without opengl support builds very well, but opengl demo building fails.
Re: does GtkD (win7) support opengl?
03.04.2013 4:13, Mike Wey пишет: GtkD relies on gtkglext-3 for it's openGL support it can be found here: https://github.com/tdz/gtkglext It currently isn't included in the Gtk-runtime installer, and as far as i know there aren't any binaries readily available for windows. And i haven't yet found the time to try and build it myself. So undefined symbols may be just unported to windows part of gtkd library?
does GtkD (win7) support opengl?
I built GtkD following instructions from https://github.com/gtkd-developers/GtkD/wiki/Installing-on-Windows. Then I tried to build demo from demos/gl/simple/simplegl.d and failed with undefined symbols http://dpaste.dzfl.pl/ba0c3277 Script (dgen.d) builds the whole library and there is no separate lib to provide opengl (sort of gtkdgl.lib) so where can I find these undefined symbols to satisfy compiler?
Re: Text from the Internet page
27.03.2013 17:43, SaltySugar пишет: How to get a piece of text from the Internet page with D code? Its totally depends on context you are workin. For example you can use D as script and by means of wget to get the whole page and then parse it with sed. Also you can use curl and use D as programming language.
GC, memory leaks and 32/64 bit
32 bit versions (using dmd and gdc, win7/ubuntu 12.04) of my application always leak very fast. But 64 bit version (ubuntu 12.04 only, win7 segfaults) works stable without any leaks. I'm curious is there some workaround or I have to wait for GC improvement to build 32bit version, without choice?
Re: gui libs
28.02.2013 16:35, rho пишет: hi, what keeps me from using d, is that there is no compilable gui lib available. does dfl compile with the latest dmd? DWT is compilable with the last dmd and works fine Also GTK is available, but I didn't tested it
Re: std.concurrency.thisTid.send() feat. immutable(struct with several arrays)
27.02.2013 14:19, Jonathan M Davis пишет: On Wednesday, February 27, 2013 13:19:22 Alexandr Druzhinin wrote: This code doesn't compiles http://dpaste.dzfl.pl/706a0d12 But if you comment one of arrays it will do. I take a look at varaint.d but can't understand why two arrays cause this error. How can I send immutable struct that contains two or more arrays without any serializing? I don't exactly what's going on with your code here, but std.concurrency is very buggy with regards to what types it will and won't accept - including both immutable and arrays. These are just some of the reported issues: http://d.puremagic.com/issues/show_bug.cgi?id=6585 http://d.puremagic.com/issues/show_bug.cgi?id=5538 http://d.puremagic.com/issues/show_bug.cgi?id=8853 http://d.puremagic.com/issues/show_bug.cgi?id=9122 Your problem may be one of those. std.concurrency is fantastic as far as its basic design goes, but its implementation still needs a fair bit of work. It generally works, but it's fairly easy to find corner cases where it doesn't work. - Jonathan M Davis Thank you. I will learn to use reported issues.
Re: Linking C and D
27.02.2013 23:12, monarch_dodra пишет: I can't seem to get the executable to link correctly. I'm using gcc and dmd on windows. I'm building foo.c with: gcc -c foo.c -o foo.obj Then I build my exe with: dmd foo.obj main.d But I get: OPTLINK (R) for Win32 Release 8.00.12 Copyright (C) Digital Mars 1989-2010 All rights reserved. http://www.digitalmars.com/ctg/optlink.html test.obj Offset 0H Record Type 004C Error 138: Module or Dictionary corrupt --- errorlevel 1 ...Help ? Under Windows I use dmc + dmd and gdc + gcc - all these combinations work fine. But I only tested it on simple and small files. There is also unilink (ftp://ftp.styx.cabel.net/pub/UniLink/) - they say it can link together omf and coff, but I don't try it
Re: Linking C and D
27.02.2013 23:50, monarch_dodra пишет: dmc seems to start choking when my font files start to reach about 15 Mo. I suppose there's a switch somewhere, but I've never used dmc before, so all the switches are unknown to me. I guess I'll just have to learn (anybody know?). If worst comes to worst, I can try to split the font files, but since they are tool generated, I really shouldn't be touching them. IIRC, there is such switch, but I can't remember it, may be http://www.digitalmars.com/ctg/sc.html#dashCapHCapP ?
std.concurrency.thisTid.send() feat. immutable(struct with several arrays)
This code doesn't compiles http://dpaste.dzfl.pl/706a0d12 But if you comment one of arrays it will do. I take a look at varaint.d but can't understand why two arrays cause this error. How can I send immutable struct that contains two or more arrays without any serializing?
Re: std.concurrency.thisTid.send() feat. immutable(struct with several arrays)
27.02.2013 13:19, Alexandr Druzhinin пишет: This code doesn't compiles http://dpaste.dzfl.pl/706a0d12 But if you comment one of arrays it will do. I take a look at varaint.d but can't understand why two arrays cause this error. How can I send immutable struct that contains two or more arrays without any serializing? I've done it using pointer to the structure thisTid.send(test_var); but using pointers isn't good practice and if somebody explain the reason of compiler complaining it would be great. thank in advance
