Re: how to build DSFMLC ?
On Sunday, 19 August 2018 at 08:57:05 UTC, Flaze07 wrote: I keep having the same problem with building DSFMLC https://ibb.co/edRStK for anyone having the same problem, I found the solution in another thread. You have to use MinGW32 bit version if you use mingw, as for visual C++, I think you can use both 32 bit and 64 bit
how to build DSFMLC ?
I keep having the same problem with building DSFMLC https://ibb.co/edRStK
Re: how to compile D programs without console window
On Sunday, 15 July 2018 at 01:20:25 UTC, evilrat wrote: ... "lflags": [ "/SUBSYSTEM:windows" ], ... didn't know that, thank you
Re: how to compile D programs without console window
On Saturday, 14 July 2018 at 09:39:21 UTC, rikki cattermole wrote: If you're using dub, throw them into lflags and remove the -L. https://forum.dlang.org/post/gmcsxgfsfnwllploo...@forum.dlang.org hmm, for some unknown reason it says that it is unable to find SUBSYSTEM:windows.lib
how to compile D programs without console window
how do you compile a D programs without a console window ? I found this link https://wiki.dlang.org/D_for_Win32 I know that you need .def file, but how do you link to .def ?
Re: class that is initialized becomes null when outside of function
On Monday, 9 July 2018 at 09:38:30 UTC, ag0aep6g wrote: The `win` you're creating in `init` is a function-local variable. It ceases to exist when `init` returns. It's not `this.win`. In `run`, you're accessing `this.win`. It's still null because you never assigned anything there. So change `auto win = ...;` to `this.win = ...;` or simply `win = ...;`. oops, I forgot... haha what a silly mistake, thank you
Re: class that is initialized becomes null when outside of function
On Monday, 9 July 2018 at 09:18:50 UTC, Flaze07 wrote:
I am using DSFML
module game;
[...]
oh, and I forgot, I had
Game myGame;
static this()
{
myGame = new Game;
}
below the Game class
class that is initialized becomes null when outside of function
I am using DSFML
module game;
import core.time;
import std.stdio: writeln;
import dsfml.graphics;
import dsfgui.button;
import apple;
import snake;
class Game
{
private:
enum State { menu, playing }
State state;
Font font;
Button playBtn;
Snake snake;
Apple apple;
RenderWindow win;
int size;
protected:
this(){}
public:
void init()
{
import std.exception : enforce;
size = 10;
auto win = new RenderWindow( VideoMode( 600, 600 ),
"snake" );
font = new Font;
enforce( font.loadFromFile( "media/arial.ttf" ), "failed
to load font arial" );
playBtn = new Button( "play", font );
playBtn.position = Vector2f( 300, 300 );
snake = new Snake( size, 3, Vector2f( win.size.x,
win.size.y ) );
apple = new Apple( size / 2, Vector2f( win.size.x,
win.size.y ) );
}
void run()
{
auto clock = new Clock;
writeln( win is null );
while( win.isOpen() )
{
writeln("lol" );
}
}
}
the problem here is, during init(), the writeln will output
false, which means yes win is initialized, however during run(),
suddenly win is null becomes true...
and here is my main()
void main( string[] args )
{
myGame.init();
myGame.run();
}
P.S I tested this with int* and it don't become null when
function ends
Re: how to do template constraints with variadic templates ?
On Sunday, 8 July 2018 at 02:10:12 UTC, Simen Kjærås wrote: Also, you should probably use CommonType!A for the type of temp, since an int can't hold all the possible values of a long or ulong (or even uint), and you'll thus get unexpected results with large numbers. -- Simen I see, thanks, it's helpful. I really should check out std.meta alot more
Re: how to do template constraints with variadic templates ?
On Sunday, 8 July 2018 at 00:46:13 UTC, Flaze07 wrote:
I want to force the variadic templates's type to be of certain
types, I thought doing this would work
auto sum( A... )( A a ) if( isIntegral!( typeid( a[ 0 ] ) ) )
{
int temp;
foreach( t ; a )
{
temp += t;
}
return temp;
}
but it gives out error
( note : I want all the parameter to be integral, i.e sum( 1,
2, 5, "error" ); //error
I uhh managed to do it with this code
auto sum( A... )( A a )
{
static foreach( t ; a )
{
static assert( isIntegral!( typeof( t ) ) );
}
int temp;
foreach( t ; a )
{
temp += t;
}
return temp;
}
but, I just want to ask something, is the static assert still
runned during runtime ?
how to do template constraints with variadic templates ?
I want to force the variadic templates's type to be of certain
types, I thought doing this would work
auto sum( A... )( A a ) if( isIntegral!( typeid( a[ 0 ] ) ) )
{
int temp;
foreach( t ; a )
{
temp += t;
}
return temp;
}
but it gives out error
( note : I want all the parameter to be integral, i.e sum( 1, 2,
5, "error" ); //error
Re: Outside array bounds
On Saturday, 7 July 2018 at 08:09:51 UTC, vino.B wrote:
Hi All,
Request you help, on the below code
import std.stdio: writeln;
void process(T ...)(string ID, T args) {
if (ID == "I1") { writeln(args.length, "\t", args[0]); }
else if (ID == "I2") { writeln(args.length, "\t", args[1]);}
}
void main() {
string S1 = "Test1", S2 = "Test2", ID1 = "I1", ID2 = "I2";
int Size = 1;
process(ID1, S1);
process(ID2, S2, Size);
}
Error:
Test.d(5): Error: array index [1] is outside array bounds [0 ..
1]
Test.d(11): Error: template instance `Test.process!string`
error instantiating
From,
Vino.B
in the first process template instantiation, you have a code that
has args[ 1 ], despite the size being 1, which means you can only
have args[ 0 ], how about changing the code to instead args[ $ -
1 ] ?
Re: how to link self made lib using dub
On Friday, 6 July 2018 at 21:13:37 UTC, Timoses wrote:
Shouldn't this be 'import output'?
nah, because I didn't import source directly, I import experiment
so in order to use it, I do source/output.d, which when importing
module means, source.output
and this '...\\experiment\\source\\'? (I'm not accustomed to
Windows..)
nope, because I want to do make some sort of a package thing
You could also add a dependency to your other dub project and
dub should automatically add the import and linker flags.
Add this to your dub.json:
"dependencies":
{
"experiment": {"version": "*", "path": "../experiment"}
}
I didn't test this now, but it should work something like that
(again, not sure about Windows path...).
See also:
http://code.dlang.org/package-format?lang=json#version-specs
huh, didn't know I could do that
how to link self made lib using dub
I have been trying to link self made .lib, and have tried to use
it several times, I failed..
so, here I have a file in this path :
Z:\programming\D\usefulFiles\experiment\source\output.d
it has
module output;
class Output {
public:
static void write( string msg ) {
import std.stdio;
writeln( msg );
}
}
and then I compiled it into library using dub project with this
file in a path : Z:\programming\D\usefulFiles\experiment\dub.json
{
"name" : "experiment",
"targetType": "library",
"targetPath": "lib",
"sourcePaths": [
"source",
],
}
then, I made a project, with this main in this path :
Z:\programming\D\experimentLib\source\main.d
it contains this
module main;
import std.stdio;
import source.output;
void main( string[] args ) {
Output.write( "lol" );
readln();
}
and then, I have a dub file in this path :
Z:\programming\D\experimentLib\dub.json
it contains :
{
"name" : "experimentlib",
"targetType": "executable",
"targetPath": "bin",
"importPaths": [
"Z:\\programming\\D\\usefulFiles\\experiment\\",
],
"lflags": [
"+Z:\\programming\\D\\usefulFiles\\experiment\\lib\\",
],
}
so, I have made lflags to include the lib in experiment, but
still, it failed to linker ( it compiles fine, but the linker
fails )
Re: how to import file from another path in dub ?
On Thursday, 5 July 2018 at 08:55:13 UTC, Timoses wrote: Depending on your use case I see these options: - If you have a library that defines the symbols that you are using in the imported files you could use the dub `libs` setting - Otherwise, if you're just using the other folder to separate code you can redefine dub's `sourcePaths`. I believe it overwrites the previous, so you have to include your 'source' folder again: "sourcePaths": ["source", ""] When using sourcePaths, dub actually passes all files within all mentioned paths to dmd to compile. Hope I got it right : D. I see...so that means, I only need importPaths if I have compiled it to libs got it
Re: Cleanup class after method?
On Wednesday, 4 July 2018 at 16:02:25 UTC, Jonathan M Davis wrote: -dip1000 fully implements scope so that it verifies that no reference escapes, but it's not ready yet, let alone the default behavior. - Jonathan M Davis I read the proposal about -dip1000 ( not all, some ) and there is also a scoped! template in std.typecons, so...is it better to use the scope keyword, or scoped! template
how to import file from another path in dub ?
I have a dub project, and I put the importPath to the path of the file I want to import and the source file to the source folder, and it appears that I have succeeded at importing the module, but there's one problem, it appears like I need to define some sort of thing, because the error says " Error 42: Symbol Undefined __D9animation12__ModuleInfoZ" ( I am using coedit ), do I need to compile the file into .lib ?
Re: how to create an array of scoped objects ?
On Tuesday, 3 July 2018 at 15:06:28 UTC, Mike Parker wrote: .. That said, the GC in D runs when main exits anyway, so the destructor in your example will be called. That's why I warned earlier about it being nondeterministic. For example, if you have a Texture instance that depends on the context of the RenderWindow, but the RenderWindow's destructor runs first, you could potentially see a crash on exit depending on the implementation of DSFML, SFML, and the system graphics driver. I see, so that's what you meant, thank you
Re: how to create an array of scoped objects ?
On Tuesday, 3 July 2018 at 14:32:01 UTC, Mike Parker wrote: Resources allocated for the process will be released on exit. I see...but it is dependant on the OS right ? because I have seen other stuff relating to malloc as well, there are some out there that said that there is no need to free any more because the OS ( in this case windows ) will handle it
Re: how to create an array of scoped objects ?
On Tuesday, 3 July 2018 at 10:00:00 UTC, Mike Parker wrote:
The only way you're going to be leaking resources is if the app
is long running and the resource objects are never collected.
I'd be more concerned about the nondeterministic nature of the
destructor calls, particularly what happens at app shut down if
the render window destructor is called before any thing that
depends on the graphics context. If the library doesn't account
for that, you'll get random crashes when the app exits.
If you need to release resources while the app is running, just
use resource.destroy(). This will make sure the destructor is
called and the object is reset to its init state, and you can
maintain determinism.
hmm, I assume you know about DSFML, so... i.e
void main( string args[] ) {
auto win = new RenderWindow( VideoMode( 400, 400 ), "resource
leak ?" );
win.close();
}
//in this context, is there any memory leak ? because I saw from
the source that the render window is freed during the destructor
calls
Re: how to create an array of scoped objects ?
On Tuesday, 3 July 2018 at 07:03:43 UTC, vit wrote:
On Tuesday, 3 July 2018 at 02:13:21 UTC, Flaze07 wrote:
e.g A is a class that emits output during destruction
{
auto a = scoped!A();
}
how do I contain it in a container, in the Array struct ?
{
auto a = scoped!A();
Array!( typeof( a ) ) arr;
foreach( i ; 0..3 ) {
arr.insertBack( scoped!A );
}
}
is that how you do it ?
Copying/moving scoped!Class is very unsafe. scoped!Class is
struct and have all of limitations of structs like no internal
pointers to itself...
That's why it is not copyable.
that's interesting, but I am using dsfml by jebbs( not derelict
), and I checked the code, it appears that the most of the class
allocates resource and then freeing it in Destructor i.e
class RenderWindow {
private sfRenderWindow* _window;
public {
this() {
_window = sfRenderWindow_create(/*parameters*/);
}
//couple of other functions
~this() {
sfRenderWindow_destroy( window );
}
}
}
//not a very accurate representation, but should get the message
pretty clear
which I am very concerned about leaking resources, the tutorial
did just not use scoped!, instead it directly use new, but what
about leaking resources ?
how to create an array of scoped objects ?
e.g A is a class that emits output during destruction
{
auto a = scoped!A();
}
how do I contain it in a container, in the Array struct ?
{
auto a = scoped!A();
Array!( typeof( a ) ) arr;
foreach( i ; 0..3 ) {
arr.insertBack( scoped!A );
}
}
is that how you do it ?
Re: turn range into tuple ?
On Thursday, 28 June 2018 at 09:47:07 UTC, Jonathan M Davis wrote: On Thursday, June 28, 2018 09:26:10 Flaze07 via Digitalmars-d-learn wrote: On Thursday, 28 June 2018 at 08:52:33 UTC, Simen Kjærås wrote: > [...] what about during runtime ? Ranges in general have an arbitrary length, whereas tuples have a fixed length that is known at compile time. So, it really doesn't make sense to convert a range to a tuple. You can create function that takes the first x number of elements of a range (probably throwing if the range is too short) and create a tuple from those elements, but it would be a bit of a pain to do, and it would generally be a pretty weird thing to do. A dynamic array would make a lot more sense than a tuple. - Jonathan M Davis ok gotcha
Re: turn range into tuple ?
On Thursday, 28 June 2018 at 09:42:54 UTC, Flaze07 wrote:
On Thursday, 28 June 2018 at 09:38:36 UTC, Stefan Koch wrote:
On Thursday, 28 June 2018 at 09:26:10 UTC, Flaze07 wrote:
On Thursday, 28 June 2018 at 08:52:33 UTC, Simen Kjærås wrote:
On Thursday, 28 June 2018 at 08:36:54 UTC, Flaze07 wrote:
is there some sort of ways to turn range into tuple ? ( an
array preferably )
e.g
uint[] arr = [ 10, 20, 30 ];
auto tup = rangeToTup( arr );
assert( tup[ 0 ] == 10 );
assert( tup[ 1 ] == 20 );
assert( tup[ 2 ] == 30 );
https://dlang.org/phobos/std_meta#aliasSeqOf
--
Simen
what about during runtime ?
Tuples are compile-time entities.
However if you just want an array use std.range.array.
that's interesting, thanks
the reason I am asking is that I want to do something similar to
this code in python :
a, b, c = input().split(' ')
because I feel like reading with readln is easier than readf
Re: turn range into tuple ?
On Thursday, 28 June 2018 at 09:38:36 UTC, Stefan Koch wrote: On Thursday, 28 June 2018 at 09:26:10 UTC, Flaze07 wrote: On Thursday, 28 June 2018 at 08:52:33 UTC, Simen Kjærås wrote: On Thursday, 28 June 2018 at 08:36:54 UTC, Flaze07 wrote: is there some sort of ways to turn range into tuple ? ( an array preferably ) e.g uint[] arr = [ 10, 20, 30 ]; auto tup = rangeToTup( arr ); assert( tup[ 0 ] == 10 ); assert( tup[ 1 ] == 20 ); assert( tup[ 2 ] == 30 ); https://dlang.org/phobos/std_meta#aliasSeqOf -- Simen what about during runtime ? Tuples are compile-time entities. However if you just want an array use std.range.array. that's interesting, thanks
Re: turn range into tuple ?
On Thursday, 28 June 2018 at 08:52:33 UTC, Simen Kjærås wrote: On Thursday, 28 June 2018 at 08:36:54 UTC, Flaze07 wrote: is there some sort of ways to turn range into tuple ? ( an array preferably ) e.g uint[] arr = [ 10, 20, 30 ]; auto tup = rangeToTup( arr ); assert( tup[ 0 ] == 10 ); assert( tup[ 1 ] == 20 ); assert( tup[ 2 ] == 30 ); https://dlang.org/phobos/std_meta#aliasSeqOf -- Simen what about during runtime ?
turn range into tuple ?
is there some sort of ways to turn range into tuple ? ( an array preferably ) e.g uint[] arr = [ 10, 20, 30 ]; auto tup = rangeToTup( arr ); assert( tup[ 0 ] == 10 ); assert( tup[ 1 ] == 20 ); assert( tup[ 2 ] == 30 );
Re: what is the point of functor ?
On Friday, 22 June 2018 at 20:20:56 UTC, Steven Schveighoffer wrote: On 6/22/18 2:25 PM, Ali Çehreli wrote: On 06/22/2018 08:17 AM, Steven Schveighoffer wrote: > reason to use functors I wonder whether they are more efficient because a functor would carry just the state that it needs. Also, there is no GC memory allocation unless the programmer wants to. I wonder how much state is allocated for a delegate? If it's not a closure, then none. It just uses the stack frame. Most of the time you would just use an alias instead of a functor or a delegate. -Steve I see, thank you
what is the point of functor ?
recently, I visited the glossary and saw that functor exist in D...I know that functor exist C++ as a way to easily allow higher order function, but since D already has function and delegates, is there a point to functor ?
Re: using tuple as value type for associative array
On Thursday, 21 June 2018 at 03:04:46 UTC, Computermatronic wrote: On Thursday, 21 June 2018 at 02:44:12 UTC, Flaze07 wrote: when I do Tuple!(uint, "first", uint, "second")[string] what; //I tried aliasing the tuple as well what["something"].first = 20; I get range error but when I do uint[string] what2; what2 = 20; I get none of those range error, so...how do I use tuple as value type for associative array ? what["something"].first = 20 will attempt to get an element of what, then assign a member, while what2["something"] = 20 will add an element to what2 with the value of 20. Since what["something"] is not present, it will throw a range error. Try what["something"] = tuple(20, 0); instead. huh, interesting, thanks
using tuple as value type for associative array
when I do Tuple!(uint, "first", uint, "second")[string] what; //I tried aliasing the tuple as well what["something"].first = 20; I get range error but when I do uint[string] what2; what2 = 20; I get none of those range error, so...how do I use tuple as value type for associative array ?
Re: remove not callable for char[]
On Tuesday, 12 June 2018 at 14:08:25 UTC, Steven Schveighoffer wrote: On 6/12/18 2:33 AM, Flaze07 wrote: well, not really, it just cannot auto deduce, the problem is, I don't know what to put in, I know that I can put in SwapStrategy.stable for the first one, but what about the Range, I don't know what to put in E.g int[] i = [ 1, 2 ]; i = i.remove( 1 );//able to automagically deduce char[] c = [ 'a', 'b' ]; c = c.remove( 1 ); //unable to deduce what char[] is in range The issue is that char[] is treated as an auto-decoding bi-directional range by Phobos, not an array. To get Phobos to behave, you can use byCodeUnit: import std.utf: byCodeUnit; c = c.byCodeUnit.remove(1).source; -Steve I see, so it means that only char is affected, gotcha
remove not callable for char[]
well, not really, it just cannot auto deduce, the problem is, I don't know what to put in, I know that I can put in SwapStrategy.stable for the first one, but what about the Range, I don't know what to put in E.g int[] i = [ 1, 2 ]; i = i.remove( 1 );//able to automagically deduce char[] c = [ 'a', 'b' ]; c = c.remove( 1 ); //unable to deduce what char[] is in range
Re: how to sort the container Array from std.container
On Wednesday, 6 June 2018 at 14:46:56 UTC, ag0aep6g wrote:
On 06/06/2018 04:20 PM, Flaze07 wrote:
hmm, and sorry for asking more, what about removing an element
from it ? I found no remove operation that can remove from the
middle ( removeAny and removeBack both removes the latest
element, linearRemove receive Array!uint...which don't know
how to provide )
I think removeKey would be the container primitive for that. I
don't know if there's a reason why it isn't implemented for
Array. Maybe it's just an oversight.
You can use linearRemove like this:
import std.container.array: Array;
import std.stdio: writeln;
void main()
{
Array!int a = [1, 2, 100, 200, 300, 3, 4];
a.linearRemove(a[2 .. 5]);
/* Removes elements at indices 2, 3, and 4. */
writeln(a[]); /* Prints "[1, 2, 3, 4]". */
}
ah...well thank you, well...I did finds another way, but it is
probably better to use linearRemove
I used
arr = make!( Array!uint )( remove( arr[], 2 );
so linearRemove is probably better
Re: how to sort the container Array from std.container
On Wednesday, 6 June 2018 at 14:29:28 UTC, rikki cattermole wrote: On 07/06/2018 2:27 AM, Flaze07 wrote: On Wednesday, 6 June 2018 at 14:24:15 UTC, rikki cattermole wrote: On 07/06/2018 2:20 AM, Flaze07 wrote: On Wednesday, 6 June 2018 at 14:06:54 UTC, rikki cattermole wrote: [...] hmm, and sorry for asking more, what about removing an element from it ? I found no remove operation that can remove from the middle ( removeAny and removeBack both removes the latest element, linearRemove receive Array!uint...which don't know how to provide ) filter will remove any and all occurrences of whatever you tell it to. But only in the range not the origin data structure. what about removing certain index ? Indexes and ranges don't usually go together. welp, ok then, thank you
Re: how to sort the container Array from std.container
On Wednesday, 6 June 2018 at 14:24:15 UTC, rikki cattermole wrote: On 07/06/2018 2:20 AM, Flaze07 wrote: On Wednesday, 6 June 2018 at 14:06:54 UTC, rikki cattermole wrote: On 07/06/2018 1:58 AM, Flaze07 wrote: [...] Yes. hmm, and sorry for asking more, what about removing an element from it ? I found no remove operation that can remove from the middle ( removeAny and removeBack both removes the latest element, linearRemove receive Array!uint...which don't know how to provide ) filter will remove any and all occurrences of whatever you tell it to. But only in the range not the origin data structure. what about removing certain index ?
Re: how to sort the container Array from std.container
On Wednesday, 6 June 2018 at 14:06:54 UTC, rikki cattermole wrote: On 07/06/2018 1:58 AM, Flaze07 wrote: On Wednesday, 6 June 2018 at 13:46:41 UTC, Adam D. Ruppe wrote: On Wednesday, 6 June 2018 at 13:44:09 UTC, Flaze07 wrote: sort( arr.Range ); don't work, it says cannot pass RangeT!(Array!uint) as function argument Range is the type, you want the value I think you can do sort(arr[]) maybe I see why it works, so, [] is called slice operator right ? and in https://dlang.org/phobos/std_container_array.html#.Array.opSlice it returns range, so that's why it worked Yes. hmm, and sorry for asking more, what about removing an element from it ? I found no remove operation that can remove from the middle ( removeAny and removeBack both removes the latest element, linearRemove receive Array!uint...which don't know how to provide )
Re: how to sort the container Array from std.container
On Wednesday, 6 June 2018 at 13:46:41 UTC, Adam D. Ruppe wrote: On Wednesday, 6 June 2018 at 13:44:09 UTC, Flaze07 wrote: sort( arr.Range ); don't work, it says cannot pass RangeT!(Array!uint) as function argument Range is the type, you want the value I think you can do sort(arr[]) maybe I see why it works, so, [] is called slice operator right ? and in https://dlang.org/phobos/std_container_array.html#.Array.opSlice it returns range, so that's why it worked
how to sort the container Array from std.container
I know that sort accepts Range( I am correct right ? ), so, Array!uint arr; //inserts element to arr sort( arr.Range ); don't work, it says cannot pass RangeT!(Array!uint) as function argument
