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Jason House wrote:
div0 wrote:
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Thanks Simen,
That's nicer than the chained static ifs.
Is there anyway to get rid of the enum though?
Using the enum is a pain as it means you have to edit
Burton Radons wrote:
I'm writing an XML class. There are two tests for this class, isAncestorOf
and isDescendantOf, that are implemented in terms of one another. They're
both const, and look like this:
class Node
{
Node parentNode;
/// ...
/// Return whether this is
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Jesse Phillips wrote:
http://stackoverflow.com/questions/1008803/how-to-use-pure-in-d-2-0
class TestPure
{
string[] msg;
void addMsg( string s )
{
msg ~= s;
}
};
pure TestPure run2()
{
TestPure t = new TestPure();
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bearophile wrote:
D2 is now able to execute math functions (sin, cos, sqrt, etc) at compile
time.
This little C++ program compiles correctly with G++:
// C++ code
#include math.h
#include stdio.h
struct V3 {
double x, y, z;
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downs wrote:
bearophile wrote:
I don't know much C++. Can CRTP be used in D1 too, to improve the
performance of some D1 code?
http://en.wikipedia.org/wiki/Curiously_Recurring_Template_Pattern
Bye,
bearophile
We have this, except we call it
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Bill Baxter wrote:
On Wed, Aug 19, 2009 at 10:32 AM, div0d...@users.sourceforge.net wrote:
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downs wrote:
bearophile wrote:
I don't know much C++. Can CRTP be used in D1 too, to improve the
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Bill Baxter wrote:
On Wed, Aug 19, 2009 at 10:32 AM, div0d...@users.sourceforge.net wrote:
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downs wrote:
bearophile wrote:
I don't know much C++. Can CRTP be used in D1 too, to improve the
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John C wrote:
div0 Wrote:
While we're on the subject, is it possible to mixin in a tuple?
Doesn't seem like you can...
class C(M...) {
mixin M;
}
Doesn't work.
import std.typetuple;
class C(M...) {
mixin TypeTuple!(M
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Bill Baxter wrote:
On Thu, Aug 20, 2009 at 12:15 PM, div0d...@users.sourceforge.net wrote:
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John C wrote:
div0 Wrote:
While we're on the subject, is it possible to mixin in a tuple?
Doesn't seem
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Chad J wrote:
Regarding template mixins, I'm curious, why is the decision to mixin a
template made at the call site and not at the declaration of the
template/mixin?
In other words, why do we write
template foo()
{
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Jarrett Billingsley wrote:
On Fri, Aug 21, 2009 at 1:36 PM, div0d...@users.sourceforge.net wrote:
That's what he's suggesting, and it does make sense. When you write a
template, *either* it's meant to be used as a mixin, *or* it's meant
to be
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Ary Borenszweig wrote:
div0 wrote:
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Jarrett Billingsley wrote:
On Fri, Aug 21, 2009 at 1:36 PM, div0d...@users.sourceforge.net wrote:
That's what he's suggesting, and it does make sense. When you
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Max Samukha wrote:
Sam Hu wrote:
Given below code(Win32 SDK):
int /*LRESULT*/ wndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
switch(msg)
{
case WM_LBUTTONDOWN:
{
wchar* szFileName=cast(wchar*)(new wchar[1024]);//
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Joel Christensen wrote:
I noticed you can get DMD bundled with various libraries. I found you
had to login to another web site, but the registery page has 3 must fill
in textbox's that are crazy.
Where's that?
AFAIK nobody has permission to
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Sam Hu wrote:
Fyi:
1.with DMD2032 under windows xp;
2.Tried printf,write,writeln,writef,writefln but all the same result:blank
DOS console under current exe path;
3.In c/c++ it opens total 2 DOS windows which works properly: the main one
and
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Jarrett Billingsley wrote:
On Sat, Sep 5, 2009 at 6:53 AM, div0d...@users.sourceforge.net wrote:
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Joel Christensen wrote:
I noticed you can get DMD bundled with various libraries. I found you
had to
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Saaa wrote:
The problem lies more in that I'd like to point to something which is not
there yet.
In the code 'c.method()' is not there yet, as c is null.
Maybe I should create a dummy object for c to point to in stead of null ?
That way I point
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Sam Hu wrote:
Under DMD 2.032+Window Xp:
Can I use
HMODULE LoadLibraryEx(
LPCTSTR lpFileName, // file name of module
HANDLE hFile, // reserved, must be NULL
DWORD dwFlags // entry-point execution option
);
in
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Saaa wrote:
The only way I've found so far to do static binding like you are talking
about is using string mixins.
I need to rethink stuff a bit, but mixins might be the solution.
My port of Atl's window classes uses a MFC
like message map:
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David Butler wrote:
Is there a difference between a pointer to a D array and an int* in C?
How do I convert between the two? Am I even looking in the right place?
Thanks for any help!
-Dave Butler
There's nothing wrong with your int array.
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Zarathustra wrote:
I have the problem with the following code in D2:
CreateWindowEx returns NULL but I haven't got idea why?
snip
That's because your are not properly processing all of the messages that
are involved in window creation.
See:
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bearophile wrote:
Luis P. Mendes:
I'm about to begin a project on artificial intelligence, decision trees
and some other algorithmic stuff that needs runtime and development speed.
Very good, D sounds fit for such kind of code.
If you need
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g wrote:
g Wrote:
I have been trying to actualize the http://www.dsource.org/projects/dallegro
binings to the lastest
typo: it is bindings, not binings
Downgrade your compiler version.
Every version after 2.028 has bugs which prevent non
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Tomek Sowiñski wrote:
const on a function forbids changing members:
class Wrong {
int a;
void foo() const {
a = 4;
}
}
The above rightly doesn't compile. But with a little twist...
class A {
int a;
void
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David Nadlinger wrote:
Although the code works fine with DMD, LDC complains that »this« is needed
to evaluate foo in addressOf.
That looks like a ldc bug. foo is occurring in a normal method so it
does have 'this'.
Is this a bug in LDC or in
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Tomek Sowiñski wrote:
Dnia 12-12-2009 o 13:09:49 Tomek Sowiñski j...@ask.me napisa³(a):
Error: no constructor for __anonclass10
This one seems to be unrelated to anonymous stuff.
class M {
this(byte a) { _a = a; }
byte _a;
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Steven Schveighoffer wrote:
If I have 2 identical floating point values, how do I ensure they are
binary equivalents of eachother? I'm trying to write some
unittest/assert code, and it's not exactly trivial.
I thought 'a is b' would work, but
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nnk wrote:
It is quite strange, but the following code sometimes produces a
core.exception.asserter...@c:\d\dmd2\src\phobos\std\array.d(253): Attempting
to fetch the front of an empty array while trying to sort the array and
sometimes runs just
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#ponce wrote:
When I started D, it was possible to define a scope class like this.
scope class Something
{
// blah
}
An instance declaration would then _require_ the scope storage class.
{
scope Something myVar;
// do something
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Ali Çehreli wrote:
Daniel Keep wrote:
...
snip
Well I forget the details, but it's been pointed out before
that D's cast is fundamentally broken.
You get one cast operator that hides the full set of c++
static, dynamic, const reinterpret casts.
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bearophile wrote:
I'm playing some more with immutables in D2. This program compiles:
struct Foo {
static int x;
}
void main() {
immutable Foo f;
Foo.x++;
f.x++;
}
Is this code supposed to be correct? If I have an
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Pelle Månsson wrote:
On 03/05/2010 07:50 PM, bearophile wrote:
div0:
putting it in Foo simply puts it in a namespace.
So my (wrong) idea of immutable applied to a struct was that every
thing in such namespace becomes immutable (I think
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bearophile wrote:
I'm looking for D2 rough edges. I've found that this D2 code
compiles and doesn't assert at runtime:
enum Foo { V1 = 10 }
void main() {
assert(Foo.V1 == 10);
}
But I think enums and integers are not the same type,
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Zarathustra wrote:
Why, in the following piece of code, destructor for 'x' is never called?
snip
Because it is not guaranteed to be called.
http://www.digitalmars.com/d/2.0/class.html#destructors
According to the spec, for the cases you've
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Don wrote:
div0 wrote:
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Same as bug 3285 / bug 3516?
No, they are for structs, not classes.
I had a bit more of a play, and it seems that the scope object is on the
stack, so it's memory
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Ellery Newcomer wrote:
As ctfe support matures, I dream of a full-fledged parser generator that
can be evaluated at compile time, although that's way more heavy duty
than what most people will need.
My spirit port might be an option at some
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Dan wrote:
Hi All,
So there's my questions
Why D2 changed in this way the operators overloading?
I saw the the compiler compiles both the functions, even considering this I
assume it's not safe to use the old D1 way,
right?
Because Walter got
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Ali Çehreli wrote:
It is unspecified behavior in C++ to access any member of a union other
than the one that was used last to store a value in it.
Is that the case with D as well?
Ali
yes, union in D is the same as C/C++
- --
My enormous
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bearophile wrote:
are several other undecided things like this,
It's not undecided. It's very clear that a union is exactly equivalent
to it's C/C++ counter for the specific purposes of C/C++ interop and
other low level features like painting
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eles wrote:
Thanks for your answer. Me too, I prefer working on linux but for
some reasons I remain on windows until dmd goes 64-bit.
For the record, std.stdio works fine:
Compiling
import std.stdio;
int main(){
writefln(hello!\n);
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Simen kjaeraas wrote:
Daniel Keep daniel.keep.li...@gmail.com wrote:
That's right, it's time for everyone's favourite [1] game: guess why
OPTLINK's not working! [2]
[...]
Does anyone have any idea, any idea at all, on what could be causing
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Daniel Keep wrote:
Well, except for this:
_D11TokenStream808d8d5_ctorMFC6Sourcef6P809091
DFS8Location808989AaYvJS68085cfs5f4Zb80
99aaZC819a87
(broken across 3 lines; xx are bytes in hex since several of them were
non-printable.)
As
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Jérôme M. Berger wrote:
That depends. In C/C++, the default value for any global variable
is to have all bits set to 0 whatever that means for the actual data
type.
No it's not, it's always uninitialized.
Visual studio will initialise
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Jérôme M. Berger wrote:
div0 wrote:
Jérôme M. Berger wrote:
That depends. In C/C++, the default value for any global variable
is to have all bits set to 0 whatever that means for the actual data
type.
No it's not, it's always uninitialized
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strtr wrote:
Or more to the point:
Can (Class) template mixin functions be devirtualized by the compiler or do I
(as
optimization) need to manually copy paste the boiler plate code?
You can just wrap the mixin in a final block:
import
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strtr wrote:
== Quote from div0 (d...@users.sourceforge.net)'s article
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strtr wrote:
Or more to the point:
Can (Class) template mixin functions be devirtualized by the compiler or do
I
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Pillsy wrote:
Hi, all,
I was wondering if there's any way to determine at compile time
whether a struct has a (non-trivial) destructor associated with it,
and whether there's any way to call that destructor without using
the delete operator. It
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Stewart Gordon wrote:
div0 wrote:
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Lars T. Kyllingstad wrote:
In D2, what is the effect (if any) of 'scope' in the following
situations?
scope int a;
Nothing
http://www.digitalmars.com/d/2.0
On 11/06/2010 20:00, Ali Çehreli wrote:
The following program demonstrates a problem that I just hit. It is a
known gotcha of arithmetic conversion rules.
The program is trying to center some text around an index of a char
array. To avoid negative index values, it calls 'max' to limit the
On 11/06/2010 21:02, div0 wrote:
On 11/06/2010 20:00, Ali Çehreli wrote:
The following program demonstrates a problem that I just hit. It is a
known gotcha of arithmetic conversion rules.
The program is trying to center some text around an index of a char
array. To avoid negative index values
On 22/06/2010 07:29, Jonathan M Davis wrote:
Okay. If you call until like so
str.until('\')
you get a Until!(pred,string,char). I want to turn that into a string.
array() doesn't seem to do the trick right now. It used to work, but now it
gives me
main.d(47): Error: template
On 22/06/2010 19:26, Jonathan M Davis wrote:
div0 wrote:
On 22/06/2010 07:29, Jonathan M Davis wrote:
Okay. If you call until like so
str.until('\')
you get a Until!(pred,string,char). I want to turn that into a string.
array() doesn't seem to do the trick right now. It used to work
On 22/06/2010 23:05, Jonathan M Davis wrote:
Oh my, you caveman! ;) I'd have to go look at all of the changelogs to even
have a clue of what's been changed since then. Oh well, I guess that it
means that you don't have to worry about stuff changing on you each upgrade
by sticking to the same
On 23/06/2010 23:14, bearophile wrote:
div0:
and now with 2.047 I've been
bitten by the removal of struct initialisers.
What do you mean?
Bye,
bearophile
curly brace initialisers:
struct c4 {
float[4]_vals;
}
c4 dat = { [0,0,0,0] };
Needs to be changed to use
On 24/06/2010 13:52, Simen kjaeraas wrote:
struct Ref( T ) {
T* payload;
@property ref T getThis( ) {
return *payload;
}
@property ref T getThis( ref T value ) {
payload = value;
return *payload;
}
alias getThis this;
}
void bar( ) {
Ref!int f;
int n;
f = n;
int b = f;
}
This code fails on the
On 24/06/2010 19:23, Simen kjaeraas wrote:
div0 d...@users.sourceforge.net wrote:
This code fails on the line 'int b = f;'. Is it supposed to?
I think so.
'alias this' is used to forward stuff that appears to the right of a
dot onto the named member.
Not only. Assignment of the wrapped
On 26/06/2010 12:23, Simen kjaeraas wrote:
Daniel Murphy yebbl...@nospamgmail.com wrote:
It could be that the string returned from the regex looks the same as the
hardcoded string but contains characters that don't show up when you
print
it.
Does adding
assert(regexResult == expectedFilename);
On 26/06/2010 22:00, Pierre Rouleau wrote:
Hi all,
dmd 2.047 help states that the -map option switch generate linker .map
file.
But when compiling a single (stand-alone) source file, dmd seems to
generate the .map file even if the -map switch is not present. Is this
wanted? Should it not
On 11/07/2010 15:28, Philippe Sigaud wrote:
- Why is a 2 threads version repeatedly thrice as fast as a no thread version?
I thought it'd be only twice as fast.
Well if you are running on windows, my guess is that your 2nd cpu is
completely free of tasks, so the thread running on that one is
On 11/07/2010 20:00, BCS wrote:
Hello div0,
The rule of thumb is don't bother spawning more threads than you have
cpus. You're just wasting resources mostly.
You REALLY don't want more threads trying to run than you have cores.
Threads in a wait state, are less of an issue, but they still
On 11/07/2010 20:29, Philippe Sigaud wrote:
On Sun, Jul 11, 2010 at 20:00, div0 d...@users.sourceforge.net
mailto:d...@users.sourceforge.net wrote:
On 11/07/2010 15:28, Philippe Sigaud wrote:
- Why is a 2 threads version repeatedly thrice as fast as a no
thread version
On 12/07/2010 02:50, sybrandy wrote:
The rule of thumb is don't bother spawning more threads than you
have cpus. You're just wasting resources mostly.
You REALLY don't want more threads trying to run than you have cores.
Threads in a wait state, are less of an issue, but they still use up
On 20/07/2010 23:57, Mike Linford wrote:
I'm playing with QtD, and I tried to override a QWidget's sizeHint()
function, which is declared as const QSize sizeHint(). I tried to
override it by declaring my function as override const(QSize) sizeHint
() . I got a compiler error that it was not
On 23/07/2010 23:39, Trass3r wrote:
Getting a bunch of strange errors, anybody got an inkling what the cause
might be?
Error: function Sprite.size () is not callable using argument types ()
- wtf?
Error: function Sprite.getPixel (uint x, uint y) is not callable using
argument types
On 25/07/2010 13:55, Philippe Sigaud wrote:
OK, I must be tired, I don't know.
Nope you're not tired.
Templated constructor functions are not currently supported in D. :(
On 01/08/2010 13:12, bearophile wrote:
Andrej Mitrovic:
The point is that probably there is a newline-related bug somewhere in Phobos
and I'd like to find it.
Bye,
bearophile
Yeah there is.
I get doubled new lines as well when passing a handle opened with fopen
to a CFile thingy.
On 01/08/2010 18:22, div0 wrote:
On 01/08/2010 13:12, bearophile wrote:
Andrej Mitrovic:
The point is that probably there is a newline-related bug somewhere in
Phobos and I'd like to find it.
Bye,
bearophile
Yeah there is.
I get doubled new lines as well when passing a handle opened
On 01/08/2010 16:22, Mafi wrote:
libSDL.dll.a is a MingW- or Cygwin-compiled link library. That's not
going to work on Windows with DMD and may very likely be the source of
your problem. If you want to link with a DLL link lib, then you need to
get the tool coff2omf[1] (part of the Extended
On 06/08/2010 21:08, Blonder wrote:
Hello, I am trying to understand how operator overloading works with D. I am a
C++
programmer and I am reading the book of Andrei Alexandrescu and try to
understand
D and it's language features.
My Group example don't compile, the error is:
Error: template
On 06/08/2010 21:37, div0 wrote:
You need to add a second template parameter for the function arguments
and add a template constrait like so:
struct Group {
int i1;
Group opBinary(string op, U) (U x)
if(op == + is(U: int))
{
// do somehting
return
On 06/08/2010 22:57, Andrej Mitrovic wrote:
// Offtopic Template errors are so hard to grasp, most of the time
it's best to just ignore them and take some logical steps to fix the
errors. At least that's in my case true..
lol, that's true. I've been basing out c++ d template code for years
On 07/08/2010 13:45, simendsjo wrote:
When I do the same with a static array, I get 0. But this is just
actually garbage, right? It might contain other data, and not always 0?
Yes. It's entirely undefined what will happen, you might find that the
extra bit of memory you try and access is a
On 07/08/2010 16:25, Blonder wrote:
Is there a difference (performance) or something else between the two solutions?
I doubt it, templates are applied at compile time in the front end of
the compiler so the generated code should be the same.
The if style syntax allows much more
On 08/08/2010 22:56, simendsjo wrote:
I'm totally new to the const/immutable thing, so this might be a naive
question..
The spec says:
modification after casting away const = undefined behavior
Casting away const is mostly for dealing with external non D libraries.
Some languages have no
On 10/08/2010 13:59, BCS wrote:
Hello Jonathan,
On Monday 09 August 2010 21:18:42 BCS wrote:
We have pure functions, member functions, static functions and global
functions; but what kind of function can always be used with CTFE?
Haven't we typical called them CTFE or CTFEable functions?
On 09/08/2010 23:12, Trass3r wrote:
No one?
Eugh. Nope got OpenGL 3 bindings though.
--
My enormous talent is exceeded only by my outrageous laziness.
http://www.ssTk.co.uk
On 20/08/2010 09:17, Bob Cowdery wrote:
I'm still concerned it's a bit too soon as a lot of things seem to be
either Windows or Linux (cmake says its only tested for *nix) but not
both and there is very little guidance on building. I really want to get
this working on Windows first. As D makes
On 20/08/2010 21:16, Jonathan M Davis wrote:
It's legal according to TDPL. It seems to be intended to be used as a shorthand
for if. So, stuff like
condition writeln(my output);
are supposed to be perfectly legal as bizarre as that may seem. I don't believe
that it would be legal to do
On 21/08/2010 22:07, Bob Cowdery wrote:
On 20/08/2010 18:44, div0 wrote:
On 20/08/2010 09:17, Bob Cowdery wrote:
I'm still concerned it's a bit too soon as a lot of things seem to be
either Windows or Linux (cmake says its only tested for *nix) but not
both and there is very little guidance
On 14/10/2010 23:47, Andrej Mitrovic wrote:
Hey,
I've been looking for a D2 parser.. there seems to be a few D1 lexers, parsers,
and even some minimal semantic analysis tools but I can't find much of anything
for D2. Perhaps Goldie will be D2 compatible some day soon. :)
There's a
On 27/10/2010 20:36, sergk wrote:
class Foo(T) {
this(T t) {
bar = t;
}
T bar;
}
void main() {
auto a = new Foo(123); // doesn't work
auto b = new Foo!(int)(123); // work, but redundant
}
Is there any technical limitations preventing this, or its just a
On 31/10/2010 11:36, Bob Cowdery wrote:
Hi
I'm implementing a web sockets server as part of the UI for my
application. It's almost working but the connection closes on me just
after the handshake. I'm pretty sure the handshake response I'm sending
is incorrect.
This is the last bit of the code
On 09/11/2010 05:49, Jesse Phillips wrote:
Jesse Phillips Wrote:
I'm trying to make fuse work in D[1]. I had some help from htod, but not
everything was successful. And I'm not exactly sure how to properly convert
strings and such.
When saying D[1], I was referencing the link, not the
On 09/11/2010 23:57, Simen kjaeraas wrote:
Adam Burton adz...@gmail.com wrote:
Hi,
should the below work?
struct A
{
public this(B b) {}
}
struct B {}
void foo(A a) {}
void main()
{
B b;
foo(b); // Fails
}
The constructor parameter doesn't need to be a struct, it could be an
int.
The
On 12/11/2010 23:33, Zarathustra wrote:
Maybe it is a stupid question but I need yours help.
As in the topic. I have a Gzip archive in the buffer and I need to extract
these archive into another buffer.
I tried: void[] _uncompressed = uncompress(_compressed);
but it throws
On 13/11/2010 11:02, Jacob Carlborg wrote:
On 2010-11-12 17:44, Ellery Newcomer wrote:
Should be. Are you having problems?
(I don't use them much, but fwiw, it seems like tango had some
[trivial?] problems with them)
On 11/12/2010 10:08 AM, Jacob Carlborg wrote:
Is D supposed to be able to
On 13/11/2010 15:49, Jacob Carlborg wrote:
On 2010-11-13 14:56, div0 wrote:
On 13/11/2010 11:02, Jacob Carlborg wrote:
On 2010-11-12 17:44, Ellery Newcomer wrote:
Should be. Are you having problems?
(I don't use them much, but fwiw, it seems like tango had some
[trivial?] problems with them
On 13/11/2010 20:02, spir wrote:
On Sat, 13 Nov 2010 17:27:08 +
div0d...@sourceforge.net wrote:
How about associative array literal then? Regardless of what you call
it I shouldn't get an assertion failure.
True. It's been fixed in dmd2 though, you get:
Error: Integer constant
On 14/11/2010 11:08, spir wrote:
Hello,
There seems to be 2 main differences between structs classes:
1. structs instances are direct values, implement value semantics;
while class instances are referenced (actually pointed)
2. classes can be subtyped/subclassed in a simple way; structs
On 15/11/2010 12:12, div0 wrote:
On 15/11/2010 11:00, Lars T. Kyllingstad wrote:
I thought that the compiler could evaluate all intrinsics at compile
time, but this doesn't seem to be the case for std.math.yl2x(). Is my
assumption wrong, or is this a bug that should be reported?
-Lars
Looks
On 15/11/2010 16:45, Ellery Newcomer wrote:
poking around a little more and I really don't know what's going on.
fun piece of trivia though: while loops get rewritten to for loops, so
for(;;) l1 {
int v;
}
v = 4;
exhibits the same behavior as the while loop.
do loops seem to do the same
This is just a random stab in the dark, but my guess is that std.signals
hasn't been updated since the changes that make global vars live in TLS.
Try
__gshared SignalForwarder sigWinchSignal;
__gshared SignalForwarder sigAlrmSignal;
On 21/11/2010 08:05, Peter Federighi wrote:
So, I've been
On 21/11/2010 13:58, Jonathan M Davis wrote:
On Sunday 21 November 2010 05:49:14 spir wrote:
Hello,
On which list is one supposed to publish about a lib (text processing
toolkit) that may or not be useful to others, that may or not be
interesting in stdlib? general D list, Phobos, announce,...
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