Float values are wrong in union
I made a union to convert between int bits and floats, but the
values are coming out wrong sometimes. This is working without
issue in other languages so I'm really stumped. Here's an example:
union test { int i; float f; }
test t = { i : 0x7fb0};
float t2 = t.f;//int bits 0x7fb0 as float
test t3 = { f : t2 };
writefln("%x", t3.i);//prints 7ff0 NOT 0x7fb0
Re: Does D have object wrappers for primitives?
On Friday, 29 July 2016 at 20:25:16 UTC, Cauterite wrote:
On Friday, 29 July 2016 at 20:13:34 UTC, stunaep wrote:
I have some java code I need to convert and at one point it
uses an Object[] array to store various ints, longs, and
strings. Java has built in Integer and Long classes that wrap
the primitives in an object and strings are already objects.
No, but with a template you could easily make your own:
class Boxed(T) {
T _v;
alias _v this;
this(in T v) immutable {_v = v;};
};
auto i = new Boxed!int(6);
Thank you. This is just what I needed. I am curious though as to
why this doesn't work with strings. It would work if I removed
immutable from the Boxed constructor but I thought strings were
immutable. I get a compiler error 'not callable using a mutable
object'. Even marking a string with the immutable keyword has the
same result.
Does D have object wrappers for primitives?
I have some java code I need to convert and at one point it uses an Object[] array to store various ints, longs, and strings. Java has built in Integer and Long classes that wrap the primitives in an object and strings are already objects.
Re: How to search for an enum by values and why enum items aren't unique
On Wednesday, 27 July 2016 at 15:32:59 UTC, Meta wrote:
On Wednesday, 27 July 2016 at 13:59:54 UTC, stunaep wrote:
So how would I make a function that takes an enum and an id as
a parameter and returns a member in the enum? I tried for
quite some time to do this but it wont let me pass Test as a
parameter unless I use templates. I finally came up with this
but it wont let me return null when there's nothing found
E findEnumMember(E)(int id) if (is(E == enum)) {
auto found = [EnumMembers!E].find!(a => a.id == id)();
if(!found.empty)
return found.front;
else
...What do I return? null gives error
}
If you're going to do it like this your only real options are
to return a Nullable!E or throw an exception if the id isn't
found.
I tried Nullable!E earlier and it didnt work. I dont need it to
be done like this, it just has to be done someway. I'm asking for
help because that's the only way I could think of.
Re: How to search for an enum by values and why enum items aren't unique
On Wednesday, 20 July 2016 at 05:45:21 UTC, Jonathan M Davis
wrote:
On Wednesday, July 20, 2016 04:03:23 stunaep via
Digitalmars-d-learn wrote:
How can I search for an enum by its values? For example I have
>struct TestTraits {
>
> int value1;
> string value2;
>
>}
>
>enum Test : TestTraits {
>
> TEST = TestTraits(1, "test1"),
> TESTING = TestTraits(5, "test5")
>
>}
and I have the int 5 and need to find TESTING with it.
In java I would create a SearchableEnum interface, make all
searchable enums implement it and use this method to find them.
>public static T find(T[] vals, int
>id) {
>
> for (T val : vals) {
>
> if (id == val.getId()) {
>
> return val;
>
> }
>
> }
> return null;
>
>}
But the way enums work in D doesn't seem to permit this.
If you want the list of members in an enum, then use
std.traits.EnumMembers and you'll get a compile-time list of
them. It can be made into a runtime list by being put into an
array literal.
For instance, if we take std.datetime.Month, we can look for
the enum with the value 10 in it like so.
auto found = [EnumMembers!Month].find(10);
assert(found = [Month.oct, Month.nov, Month.dec]);
So, if you had your TestTraits struct as the type for an enum,
you could do something like
auto found = [EnumMembers!TestTraits].find!(a => a.value1 ==
5)();
if(found.empty)
{
// there is no TestTraits which matches
}
else
{
// found.front is the match
}
And why on earth are different enum items with the same values
equal to each other? Say I have an enum called DrawableShape
Because they have the same value. The fact that they're enums
doesn't change how they're compared. That's determined by what
type they are. All you're really getting with an enum is a list
of named constants that are grouped together which implicitly
convert to their base type but which are not converted to
implicitly from their base type. The only stuff that's going to
treat an enum member differently from any other value of that
type is something that specifically operates on enums - e.g. by
taking the enum type explicitly, or because it has is(T ==
enum) and does something different for enums (quite a few
traits do that in std.traits), or because it uses a final
switch. Most code is just going to treat them like any other
value of the enum's base type. They aren't magically treated as
unique in some way just because they're in an enum.
- Jonathan M Davis
So how would I make a function that takes an enum and an id as a
parameter and returns a member in the enum? I tried for quite
some time to do this but it wont let me pass Test as a parameter
unless I use templates. I finally came up with this but it wont
let me return null when there's nothing found
E findEnumMember(E)(int id) if (is(E == enum)) {
auto found = [EnumMembers!E].find!(a => a.id == id)();
if(!found.empty)
return found.front;
else
...What do I return? null gives error
}
Re: How to search for an enum by values and why enum items aren't unique
On Wednesday, 20 July 2016 at 05:45:21 UTC, Jonathan M Davis wrote: On Wednesday, July 20, 2016 04:03:23 stunaep via Digitalmars-d-learn wrote: [...] If you want the list of members in an enum, then use std.traits.EnumMembers and you'll get a compile-time list of them. It can be made into a runtime list by being put into an array literal. [...] Coming from Java I've learned to love enums that are separate objects, that can store multiple values, and that can have methods that can be in their scope. Seems to me like there's no reason to even use enums in D. What's the point when just making a constant would do the same exact thing?
How to search for an enum by values and why enum items aren't unique
How can I search for an enum by its values? For example I have
struct TestTraits {
int value1;
string value2;
}
enum Test : TestTraits {
TEST = TestTraits(1, "test1"),
TESTING = TestTraits(5, "test5")
}
and I have the int 5 and need to find TESTING with it.
In java I would create a SearchableEnum interface, make all
searchable enums implement it and use this method to find them.
public static T find(T[] vals, int
id) {
for (T val : vals) {
if (id == val.getId()) {
return val;
}
}
return null;
}
But the way enums work in D doesn't seem to permit this.
And why on earth are different enum items with the same values
equal to each other? Say I have an enum called DrawableShape
struct DrawableShapeTraits {
bool useAlpha;
int sideCount;
}
enum DrawableShape : DrawableShapeTraits {
RECTANGLE = DrawableShapeTraits(true, 4),
DIAMOND = DrawableShapeTraits(true, 4),
}
Now say I have some code that does this
if(shape == DrawableShape.DIAMOND)
... render a diamond
else if(shape == DrawableShape.RECTANGLE)
... render a rectangle
Now even if shape is a DrawableShape.RECTANGLE it's going to
render a DrawableShape.DIAMOND unless I add a dummy value to
differentiate them.
DlangUI FileDialog not working
FileDialog is showing a blank white window for me. Only tested on
windows 7 so far, but if I run dmledit, the filedialog on there
works fine. It's weird because I am using almost exactly the same
code.
Here is what it looks like
http://i.imgur.com/qslu7tJ.png
handleAction code:
case ProgramActions.FolderOpen:
UIString caption;
caption = "OPEN_DIR"c;
FileDialog dlg = createFileDialog(caption,
true);
dlg.dialogResult = delegate(Dialog dlg,
const Action result) {
if (result.id == ACTION_OPEN.id) {
string filename = result.stringParam;
//TODO
}
};
dlg.show();
return true;
case ProgramActions.FileOpen:
UIString caption;
caption = "FILE_OPEN"c;
FileDialog dlg = createFileDialog(caption,
false);
dlg.addFilter(FileFilterEntry(UIString("D_FILES"c), "*.d"));
dlg.addFilter(FileFilterEntry(UIString("ALL_FILES"c), "*.*"));
dlg.dialogResult = delegate(Dialog dlg,
const Action result) {
if (result.id == ACTION_OPEN.id) {
string filename = result.stringParam;
//TODO
}
};
dlg.show();
return true;
Here is my createFileDialog
FileDialog createFileDialog(UIString caption, bool folder,
bool fileMustExist = true) {
uint flags = DialogFlag.Modal | DialogFlag.Resizable;
if (fileMustExist)
flags |= FileDialogFlag.FileMustExist;
if (folder)
flags |= FileDialogFlag.SelectDirectory;
FileDialog dlg = new FileDialog(caption, window, null,
flags);
//dlg.filetypeIcons[""] = "";
return dlg;
}
also have this in handleActionStateRequest:
if (!_currentBackgroundOperation)
a.state = ACTION_STATE_ENABLED;
else
a.state = ACTION_STATE_DISABLE;
Re: DlangUI MouseEvent mouse delta
I am currently handling it like this: current = e.pos(); xdelta = current.x - previous.x; ydelta = current.y - previous.y; previous = current; I'm just wondering if there is a built in solution that I missed.
DlangUI MouseEvent mouse delta
I am trying to know how much the mouse moves when clicking down
on a certain widget, but I can't figure out how. I noticed only a
mouse wheel delta property and nothing for the mouse pointer x,y
deltas since the click. I am looking to do something such as
if(e.lbutton().isDown() && !e.rbutton().isDown()) {
pitch -= e.dy();
}
Re: DlangUI translations
On Sunday, 24 April 2016 at 04:49:36 UTC, thedeemon wrote: On Saturday, 23 April 2016 at 15:44:22 UTC, stunaep wrote: I am wondering how to use other languages and how to NOT use other languages. Did you see example1 from examples folder in dlangui? It has two languages and allows switching at runtime via menu. But I don't know how to change the language for ui components such as buttons and text. And the most important thing is removing "UNTRANSLATED: " from items in my list.
DlangUI translations
I am wondering how to use other languages and how to NOT use other languages. I have all of the UI of my program translated to Russian, and I have the languages loading from the resource files, but I have no idea how to switch the language to Russian. Also, when adding file names to a StringListWidget, it shows "UNTRANSLATED: " before every file name, which needs to be removed.
Re: Dlang UI - making widget extend to the bounds of the window
On Monday, 18 April 2016 at 07:50:28 UTC, Vadim Lopatin wrote: On Monday, 18 April 2016 at 07:06:43 UTC, Vadim Lopatin wrote: In TableLayout there is a bug #113 which prevents extending of table layout content to parent size. For other widgets FILL_PARENT should work ok. Issue #113 is fixed today in v0.8.8 Спасибо за помощь! Всё работает как задумано!
Re: Dlang UI - making widget extend to the bounds of the window
On Saturday, 16 April 2016 at 08:20:33 UTC, stunaep wrote:
On Friday, 15 April 2016 at 10:33:35 UTC, Vadim Lopatin wrote:
[...]
I am doing that. I think it has to do with my high dpi because
I'm using a 4k monitor.
If I use Modal window flag:
[...]
http://i.imgur.com/FJgPq8U.png
If I use resizable:
[...]
http://i.imgur.com/PsPwoSN.jpg
Actually, that is with the opengl area set to a specific size.
Here is using fill:
Window window = Platform.instance.createWindow("DlangUI OpenGL
Example", null, WindowFlag.Modal, 1250, 1250);
http://i.imgur.com/exAyjI0.png
Window window = Platform.instance.createWindow("DlangUI
OpenGL Example", null, WindowFlag.Resizable, 1250, 1250);
http://i.imgur.com/R7oxBa0.jpg
http://pastebin.com/qqbfQLvN
Re: Dlang UI - making widget extend to the bounds of the window
And no matter what window size I put when using Modal or Fullscreen, it always shows that same sized window
Re: Dlang UI - making widget extend to the bounds of the window
On Friday, 15 April 2016 at 10:33:35 UTC, Vadim Lopatin wrote:
On Friday, 15 April 2016 at 00:58:58 UTC, stunaep wrote:
I'm trying to make a gui program with dlangui, but no matter
what I do, I cannot get widgets to fill the whole window. The
window is resizable so I cannot just set the widths to static
numbers.
No layoutWidth and layoutHeight set:
http://i.imgur.com/UySt30K.png
layoutWidth/Height set to fill (left widget width 300):
http://i.imgur.com/76tMIFz.png
I need these widgets to extend the width of the window because
it is resizable
http://i.imgur.com/PiL7Y7f.png
You can see this also on DlangUI ML editor:
fill:
http://i.imgur.com/t9DsASt.png
wrap:
http://i.imgur.com/FoTS69g.png
arbitrary number:
http://i.imgur.com/voiYTWZ.png
For parent VerticalLayout, set layoutWidth: fill too
VerticalLayout {
id: main;
layoutWidth: fill;
VerticalLayout {
layoutWidth: fill;
TextWidget { text: "test"; layoutWidth: fill }
}
}
I am doing that. I think it has to do with my high dpi because
I'm using a 4k monitor.
If I use Modal window flag:
Window window = Platform.instance.createWindow("DlangUI OpenGL
Example", null, WindowFlag.Modal, 800, 700);
http://i.imgur.com/FJgPq8U.png
If I use resizable:
Window window = Platform.instance.createWindow("DlangUI OpenGL
Example", null, WindowFlag.Resizable, 800, 700);
http://i.imgur.com/PsPwoSN.jpg
Dlang UI - making widget extend to the bounds of the window
I'm trying to make a gui program with dlangui, but no matter what I do, I cannot get widgets to fill the whole window. The window is resizable so I cannot just set the widths to static numbers. No layoutWidth and layoutHeight set: http://i.imgur.com/UySt30K.png layoutWidth/Height set to fill (left widget width 300): http://i.imgur.com/76tMIFz.png I need these widgets to extend the width of the window because it is resizable http://i.imgur.com/PiL7Y7f.png You can see this also on DlangUI ML editor: fill: http://i.imgur.com/t9DsASt.png wrap: http://i.imgur.com/FoTS69g.png arbitrary number: http://i.imgur.com/voiYTWZ.png
Re: overriding methods
On Tuesday, 5 April 2016 at 18:42:33 UTC, Adam D. Ruppe wrote: On Tuesday, 5 April 2016 at 18:38:43 UTC, stunaep wrote: I get a deprecation warning with @Override, but I was unable to find the proper way to do it. What error message exactly are you getting and on what code? Both styles you put there should work equally well. I had no error on the examples I posted, only when using @Override previously. It just says to use override attribute instead of @Override source\game\client.d(8,20): Deprecation: implicitly overriding base class method game.GameWindow.startThread with game.client.Client.startThread deprecated; add 'override' attribute source\game\client.d(7,3): Error: undefined identifier 'Override'
overriding methods
I get a deprecation warning with @Override, but I was unable to
find the proper way to do it.
Am I meant to add override before the method like this?
override public void startThread(Thread t, int pri) {
...
}
Am I meant to wrap the entire method in override { } like this?
override {
public void startThread(Thread t, int pri) {
...
}
}
Both of them compile, so I'm wondering which to use. Is override
{} supposed to be for adding multiple methods inside to avoid
writing override before each method, or is putting override in
front of the method without brackets just wrong?
Re: Decompressing bzip2
On Monday, 4 April 2016 at 08:26:07 UTC, Thomas Brix Larsen wrote:
On Sunday, 3 April 2016 at 02:03:29 UTC, stunaep wrote:
I am trying to use the bzip2 bindings that are available on
code.dlang.org/packages, but I am having a really hard time
using it due to the pointers. It needs to be an array once
it's decompressed.
Here is what I have:
import std.stdio;
import bzlib;
void main(string[] args)
{
File f = File("./test.bz2");
ubyte[] data = new ubyte[f.size];
f.rawRead(data);
writeln(data);
ubyte* output;
uint avail_out;
bz_stream* stream = new bz_stream();
stream.avail_out = avail_out;
stream.next_out = output;
int init_error = BZ2_bzDecompressInit(stream, 0, 0);
int bzipresult = BZ2_bzDecompress(stream);
stream.avail_in = cast(uint) data.length;
stream.next_in = cast(ubyte*) data;
bzipresult = BZ2_bzDecompress(stream);
int read = stream.total_out_lo32;
BZ2_bzDecompressEnd(stream);
delete stream;
writeln(output);
}
It's not working at all so any help would be very much
appreciated.
You need to allocate the output array:
import std.stdio;
import bzlib;
void main(string[] args)
{
File f = File("./test.bz2");
auto data = new ubyte[](f.size);
f.rawRead(data);
writeln(data);
auto output = new ubyte[](4096);
scope stream = new bz_stream();
stream.avail_out = cast(uint)output.length;
stream.next_out = output.ptr;
int init_error = BZ2_bzDecompressInit(stream, 0, 0);
int bzipresult = BZ2_bzDecompress(stream);
stream.avail_in = cast(uint)data.length;
stream.next_in = data.ptr;
bzipresult = BZ2_bzDecompress(stream);
int read = stream.total_out_lo32;
BZ2_bzDecompressEnd(stream);
writeln(output);
}
Can you please explain what the scope keyword does and if there
is any benefit to using
"new byte[](size)" over "new byte[size]" with a 1D array?
string to uppercase
Is there any easy way to convert a string to uppercase? I tried s.asUpperCase, but it returns a ToCaserImpl, not a string, and it cant be cast to string. I also tried toUpper but it wasnt working with strings
Decompressing bzip2
I am trying to use the bzip2 bindings that are available on
code.dlang.org/packages, but I am having a really hard time using
it due to the pointers. It needs to be an array once it's
decompressed.
Here is what I have:
import std.stdio;
import bzlib;
void main(string[] args)
{
File f = File("./test.bz2");
ubyte[] data = new ubyte[f.size];
f.rawRead(data);
writeln(data);
ubyte* output;
uint avail_out;
bz_stream* stream = new bz_stream();
stream.avail_out = avail_out;
stream.next_out = output;
int init_error = BZ2_bzDecompressInit(stream, 0, 0);
int bzipresult = BZ2_bzDecompress(stream);
stream.avail_in = cast(uint) data.length;
stream.next_in = cast(ubyte*) data;
bzipresult = BZ2_bzDecompress(stream);
int read = stream.total_out_lo32;
BZ2_bzDecompressEnd(stream);
delete stream;
writeln(output);
}
It's not working at all so any help would be very much
appreciated.
Re: Something wrong with GC
On Monday, 21 March 2016 at 07:55:39 UTC, thedeemon wrote:
On Sunday, 20 March 2016 at 07:49:17 UTC, stunaep wrote:
The gc throws invalid memory errors if I use Arrays from
std.container.
Those arrays are for RAII-style deterministic memory release,
they shouldn't be freely mixed with GC-allocated things. What
happens here is while initializing Array sees it got some GC-ed
value type (strings), so it tells GC to look after those
strings. When your program ends runtime does a GC cycle, finds
your Test object, calls its destructor that calls Array
destructor that tries to tell GC not to look at its data
anymore. But during a GC cycle it's currently illegal to call
such GC methods, so it throws an error.
Moral of this story: try not to store "managed" (collected by
GC) types in Array and/or try not to have Arrays inside
"managed" objects. If Test was a struct instead of a class, it
would work fine.
So what am I do to? Any other language can do such a thing so
trivially... I also run into the same problem with
emsi_containers TreeMap. It is imperative that I can store data
such as
public class Example1 {
private File file;
public this(File f) {
this.file = f;
}
}
or
public class Example2 {
private int one;
private int two;
public this(int one, int two) {
this.one = one;
this.two = two;
}
}
in a tree map and list of some sort. Neither of the above work
whether they are classes or structs and it's starting to become
quite bothersome...
Something wrong with GC
The gc throws invalid memory errors if I use Arrays from
std.container.
For example, this throws an InvalidMemoryOperationError:
import std.stdio;
import std.container;
void main() {
new Test();
}
class Test {
private Array!string test = Array!string();
this() {
test.insert("test");
writeln(test[0]);
}
}
and here's the stack trace
testt.exe!app.onInvalidMemoryOperationError( void* _param_0 )
Line 21 D
testt.exe!_D2gc2gc2GC134__T9runLockedS57_D2gc2gc2GC11removeRangeMFNbNiPvZ2goFNbNiPS2gc2gc3GcxPvZvS19_D2gc2gc9otherTimelS19_D2gc2gc9numOtherslTPS2gc2gc3GcxTPvZ9runLockedMFNbNiKPS2gc2gc3GcxKPvZv()
+ 0x52 bytes D
testt.exe!_D2gc2gc2GC11removeRangeMFNbNiPvZv() + 0x29 bytes D
testt.exe!gc_removeRange() + 0x21 bytes D
testt.exe!_D4core6memory2GC11removeRangeFNbNixPvZv() + 0xd
bytes D
testt.exe!std.container.array.Array!string.Array.Payload.~this() Line
229 + 0x1f bytes D
testt.exe!object._destructRecurse!(std.container.array.Array!string.Array.Payload)._destructRecurse(
std.container.array.Array!string.Array.Payload* s ) Line 2409 + 0xd bytes D
testt.exe!object.destroy!(std.container.array.Array!string.Array.Payload).destroy(
std.container.array.Array!string.Array.Payload* obj ) Line 2778 + 0xd bytes D
testt.exe!std.typecons.RefCounted!(std.container.array.Array!string.Array.Payload,
cast(RefCountedAutoInitialize)0).RefCounted.~this() Line 4864 + 0x10 bytes D
testt.exe!std.container.array.Array!string.Array.~this() Line
198 + 0x15 bytes D
testt.exe!app.Test.~this() Line 10 + 0x19 bytes D
testt.exe!rt_finalize2() + 0xb8 bytes D
testt.exe!rt_finalizeFromGC() + 0x24 bytes D
testt.exe!_D2gc2gc3Gcx5sweepMFNbZm() + 0x3a3 bytes D
testt.exe!_D2gc2gc3Gcx11fullcollectMFNbbZm() + 0x57a bytes D
testt.exe!_D2gc2gc2GC86__T9runLockedS56_D2gc2gc2GC18fullCollectNoStackMFNbZ2goFNbPS2gc2gc3GcxZmTPS2gc2gc3GcxZ9runLockedMFNbKPS2gc2gc3GcxZm()
+ 0x72 bytes D
testt.exe!_D2gc2gc2GC18fullCollectNoStackMFNbZv() + 0x11
bytes D
testt.exe!gc_term() + 0x14 bytesD
testt.exe!rt_term() + 0x9e bytesD
testt.exe!_D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZv()
+ 0x4d bytes D
testt.exe!_D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ7tryExecMFMDFZvZv() +
0x6f bytesD
testt.exe!_d_run_main() + 0x419 bytes D
testt.exe!__entrypoint.main( int argc, char** argv ) + 0x22
bytes D
testt.exe!__tmainCRTStartup() Line 255 + 0x12 bytes D
kernel32.dll!76cd59cd
ntdll.dll!76f0b891
Not sure what to do here
Tracing InvalidMemoryOperationError
I need to find the source of this InvalidMemoryOperationError. I
tried loading the project in visuald but it wont break on the
error.
I also tried adding
extern(C) void onInvalidMemoryOperationError(void*) {
asm { int 3; }
}
building with
dub build --build=debug --arch=x86_64
and then using gdb, but it says "(no debugging symbols found)"
and does this
(gdb) r
Starting program: program.exe
[New Thread 8144.0xf00]
Program received signal SIGTRAP, Trace/breakpoint trap.
0x00013f7a5f99 in ?? ()
(gdb) where
#0 0x00013f7a5f99 in ?? ()
Backtrace stopped: previous frame identical to this frame
(corrupt stack?)
Re: std.stdio.File.seek error
On Monday, 14 March 2016 at 13:33:36 UTC, Mike Parker wrote: On Monday, 14 March 2016 at 09:57:19 UTC, stunaep wrote: It looks like _fseeki64 is in the nightly build but not dmd 2.070.2; However, the nightly build says std.stdio and std.conv are deprecated and I cant use them. I think you may be misinterpreting the error message. There was a change recently in how imports are handled in certain cases and that may be what you're seeing. What exactly is the error message? I'm on my phone but I think It said something like Deprecation: module std.stdio not accessible from here. Try import static std.stdio
Re: std.stdio.File.seek error
On Monday, 14 March 2016 at 07:15:01 UTC, Nicholas Wilson wrote: On Monday, 14 March 2016 at 05:24:48 UTC, stunaep wrote: On Monday, 14 March 2016 at 03:07:05 UTC, Nicholas Wilson wrote: [...] I'm currently on windows 7. The code you gave me prints 022. It's weird because it always tries to convert longs to ints and I think that is weird because the function uses a c_long. [...] It wont even compile if I try giving it a long [...] I also tried giving it a c_long, but this line [...] gives this error for some reason... [...] It's like c_longs are not longs at all... c_long maps to the target long which evidently is not 64-bit on win7 meaning you can't seek longer than int.max. if you cant't find _fseeki64 try looking in the windows section. Glad you got it working on arch. Nic It looks like _fseeki64 is in the nightly build but not dmd 2.070.2; However, the nightly build says std.stdio and std.conv are deprecated and I cant use them.
Re: std.stdio.File.seek error
Just tested it on arch linux 64 bit and it works with no problem seeking to positions over 2^31-1
Re: std.stdio.File.seek error
It seems my lacking knowledge of C has gotten the best of me and longs in C only have a signed int range? It looks like in C, fseeko() is needed on linux and _fseeki64() is needed on windows, but I dont see either of these in stdc.stdio.
Re: std.stdio.File.seek error
On Monday, 14 March 2016 at 03:07:05 UTC, Nicholas Wilson wrote:
On Monday, 14 March 2016 at 00:12:46 UTC, stunaep wrote:
On Sunday, 13 March 2016 at 12:21:11 UTC, Nicholas Wilson
wrote:
[...]
I'm on 64 bit but it needs to work on both. It works for
anything between 0 and 2147483647.
[...]
that throws an error before reaching f.tell()
[...]
Also, seeking relative to the current position throws the same
error as in the original post if it's over max signed int.
[...]
Hmm. If you're getting an errno exception ( as opposed to a
conv) I really don't
think that theres anything you can do about it, as its a
problem with the C standard
lib. What OS/version are you running?
what does the equivalent in C give you.
i.e.
FILE* f = fopen(...,"r");
fseek(f,0,SEEK_END);
printf("%ld",ftell(f));
printf("%d",errno);
I'm currently on windows 7. The code you gave me prints 022. It's
weird because it always tries to convert longs to ints and I
think that is weird because the function uses a c_long.
int fseek(FILE* stream, c_long offset, int whence)
It wont even compile if I try giving it a long
Error: function core.stdc.stdio.fseek (shared(_iobuf)* stream,
int offset, int whence) is not callable using argument types
(shared(_iobuf)*, long, int)
I also tried giving it a c_long, but this line
c_long test = 2147483649;
gives this error for some reason...
Error: cannot implicitly convert expression (2147483649L) of
type long to int
It's like c_longs are not longs at all...
Re: std.stdio.File.seek error
On Sunday, 13 March 2016 at 12:21:11 UTC, Nicholas Wilson wrote: On Sunday, 13 March 2016 at 10:32:41 UTC, stunaep wrote: I have a very large file I need to read data from at certain positions, but I have run into this error std.conv.ConvOverflowException@std\conv.d(1328): Conversion positive overflow when seeking to 6346890680. Seeking to smaller values such as 3580720 work with no problem. The file is well over 8GB, so it must be able to read data at positions that high. are you on a 32 or 64 bit system? You could try 2 or more consecutive relative seeks in place of an absolute seek. i.e. File f = ... ; f.seek(173445340 , SEEK_SET); f.seek(173445340 , SEEK_REL); also what does f.seek(0,SEEK_END); writeln(f.tell()); print? I'm on 64 bit but it needs to work on both. It works for anything between 0 and 2147483647. f.seek(0,SEEK_END); writeln(f.tell()); that throws an error before reaching f.tell() std.exception.ErrnoException@std\stdio.d(920): Could not seek in file `./file.dat' (Invalid argument) 0x00013FE67868 in @safe bool std.exception.errnoEnforce!(bool, "std\stdio.d", 920uL).errnoEnforce(bool, lazy immutable(char)[]) 0x00013FE4E7D3 in @trusted void std.stdio.File.seek(long, int) Also, seeking relative to the current position throws the same error as in the original post if it's over max signed int. f.seek(2147483647, SEEK_SET); writeln(f.tell()); // prints 2147483647 f.seek(4, SEEK_CUR); // throws error
std.stdio.File.seek error
I have a very large file I need to read data from at certain positions, but I have run into this error std.conv.ConvOverflowException@std\conv.d(1328): Conversion positive overflow when seeking to 6346890680. Seeking to smaller values such as 3580720 work with no problem. The file is well over 8GB, so it must be able to read data at positions that high.
Re: Is there a sorted map?
On Sunday, 13 March 2016 at 08:33:43 UTC, Jonathan M Davis wrote: On Sunday, March 13, 2016 02:35:27 stunaep via Digitalmars-d-learn wrote: [...] The closest that we have in Phobos at the moment is RedBlackTree in std.container. Its API is geared towards sets, not maps, but you can get it to work as a map if you define the comparison functions appropriately. Red-black trees are typically used for both sets and maps, so using RedBlackTree in that manner is pretty normal from an implementation perspective, but there's no question that what we really need is a wrapper around it that provides a map API, since it's not terribly user-friendly to use the set API for a map, much as it works. [...] Wow, thanks!
Is there a sorted map?
Is there any sorted map in D? I need a map and I need to be able to get the highest key in the map. In java I would use a TreeMap and use map.lastKey(), but since associative arrays are not sorted that would be O(n). I know about RedBlackTree, but that's a set and it must be a map.
Re: BZ2 library
On Saturday, 12 March 2016 at 10:10:44 UTC, Basile B. wrote:
On Saturday, 12 March 2016 at 09:53:36 UTC, stunaep wrote:
[...]
"dflags" : ["lib\\libbzip2.lib"] is only if you want to compile
as 32 bit AND in OMF, so the -m32mscoff switch must NOT be set
(I see that someone else explained you how to compile using the
coff object format, which is not the same thing as I've
explained before)
so in the config you should have something like that
"configurations" :
[
{
"name" : "win32omf",
"dflags" : ["lib\\omf32\\libbzip2.lib"] // made with dmc
or converted
},
{
"name" : "win64coff",
"dflags" : ["lib\\coff64\\libbzip2.lib", "-m64"] // made
with gcc
},
]
Thanks for that. The other issue I had was solved because I wasnt
using runtime library /MT when compiling the .lib.
Re: BZ2 library
On Saturday, 12 March 2016 at 07:56:03 UTC, Mike Parker wrote: [...] On Saturday, 12 March 2016 at 09:04:08 UTC, stunaep wrote: On Saturday, 12 March 2016 at 07:56:03 UTC, Mike Parker wrote: [...] If I do "dflags" : ["lib/libbzip2.lib"] as Basile B. suggested instead of pragma, I get the same error on x86_64 as I do on x86 I think "dflags" : ["lib/libbzip2.lib"] is not loading anything at all because the same thing happens if I delete the lib file
Re: BZ2 library
On Saturday, 12 March 2016 at 07:56:03 UTC, Mike Parker wrote: [...] If I do "dflags" : ["lib/libbzip2.lib"] as Basile B. suggested instead of pragma, I get the same error on x86_64 as I do on x86
Re: BZ2 library
On Saturday, 12 March 2016 at 06:07:25 UTC, Mike Parker wrote: [...] I used visual studio 2013 to build the libraries With dflag -m64 and dub flag --arch=x86_64, this happens Running: dub build --arch=x86_64 ## Warning for package rsdlib ## The following compiler flags have been specified in the package description file. They are handled by DUB and direct use in packages is discouraged. Alternatively, you can set the DFLAGS environment variable to pass custom flags to the compiler, or use one of the suggestions below: -m64: Use --arch=x86/--arch=x86_64 to specify the target architecture Performing "debug" build using dmd for x86_64. rsdlib ~master: building configuration "application"... Linking... MSVCRT.lib(MSVCR120.dll) : error LNK2005: exit already defined in LIBCMT.lib(crt0dat.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: free already defined in LIBCMT.lib(free.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: malloc already defined in LIBCMT.lib(malloc.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: __iob_func already defined in LIBCMT.lib(_file.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: fclose already defined in LIBCMT.lib(fclose.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: ferror already defined in LIBCMT.lib(feoferr.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: fflush already defined in LIBCMT.lib(fflush.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: fprintf already defined in LIBCMT.lib(fprintf.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: fread already defined in LIBCMT.lib(fread.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: fwrite already defined in LIBCMT.lib(fwrite.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: ungetc already defined in LIBCMT.lib(ungetc.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: isdigit already defined in LIBCMT.lib(_ctype.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: _fdopen already defined in LIBCMT.lib(fdopen.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: _fileno already defined in LIBCMT.lib(fileno.obj) MSVCRT.lib(MSVCR120.dll) : error LNK2005: _setmode already defined in LIBCMT.lib(setmode.obj) LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library .dub\build\application-debug-windows-x86_64-dmd_2070-F2AB32EEAA78A29A3AA6010749D38D4A\rsdlib.exe : fatal error LNK1169: one or more multiply defined symbols found --- errorlevel 1169 dmd failed with exit code 1169. and with dflag -m32mscoff, this happens Performing "debug" build using dmd for x86. rsdlib ~master: building configuration "application"... Linking... rsdlib.obj : error LNK2019: unresolved external symbol _BZ2_bzDecompressInit referenced in function _D6rsdlib6cache39Container6decodeFC6rsdlib2io10ByteBufferAiZC6rsdlib6cache39Container rsdlib.obj : error LNK2019: unresolved external symbol _BZ2_bzDecompress referenced in function _D6rsdlib6cache39Container6decodeFC6rsdlib2io10ByteBufferAiZC6rsdlib6cache39Container rsdlib.obj : error LNK2019: unresolved external symbol _BZ2_bzDecompressEnd referenced in function _D6rsdlib6cache39Container6decodeFC6rsdlib2io10ByteBufferAiZC6rsdlib6cache39Container .dub\build\application-debug-windows-x86-dmd_2070-E301E842F2B5FA1A3A9D79D8EE34C4E8\rsdlib.exe : fatal error LNK1120: 3 unresolved externals --- errorlevel 1120 dmd failed with exit code 1120.
BZ2 library
I'm really having a hard time using bzp (and later I need gzip
and lzma).
So I added this bzip2 D interface to my DUB dependencies
"dependencies" : {
"bzip2": "~>0.1.0"
}
I downloaded the bzip2 source code and compiled it for windows
32bit (will 64 bit work with dmd2?). Then I used coffimplib.exe
to convert the .lib file from coff to omf. From there I added
this code:
pragma(lib, "libbzip2OMF.lib");
Now when I run the program it terminates with exit code
-1073741515 and will not print or do anything written in the
program. Am I doing the right things? This is the first time I've
ever done this and I was unable to find any useful help on this
subject, so some help would be very much appreciated. Thanks.
