On Wednesday, 15 June 2022 at 12:26:40 UTC, cc wrote:
Why doesn't this work? There is nothing in the foreach body.
```d
alias ALL = getSymbolsByUDA!(Def, XML);
pragma(msg, ALL.stringof);
```
reports `tuple(this.x, this.y)`. Why is `this.` added?
I can only answer this partially, I guess
On Thursday, 16 June 2022 at 10:07:23 UTC, kdevel wrote:
On Wednesday, 15 June 2022 at 20:46:56 UTC, Steven
Schveighoffer wrote:
[...]
It has not harmed my code though. I tried throwing inside a
scope guard, and it just works, I'm not sure why you can't
throw in those?
You can but that
On Thursday, 16 June 2022 at 11:28:32 UTC, bauss wrote:
[...]
https://dlang.org/spec/statement.html#scope-guard-statement
Quote (again): "A [...] scope(success) statement may not exit
with a throw [...]."
[...]
If the spec forbids it, but the compiler allows it, wouldn't it
then be a bug?
On Thursday, 16 June 2022 at 09:29:36 UTC, Arafel wrote:
Classes can have static members just as structs, so I don't
think you always need an instance for a class either.
Well, ok.
So if you call `getMember` from a member function, it adds the
hidden `this` reference, and this has subtle
On Thursday, 16 June 2022 at 11:38:40 UTC, kdevel wrote:
On Thursday, 16 June 2022 at 11:28:32 UTC, bauss wrote:
[...]
https://dlang.org/spec/statement.html#scope-guard-statement
Quote (again): "A [...] scope(success) statement may not exit
with a throw [...]."
[...]
If the spec forbids it,
On Thursday, 16 June 2022 at 16:37:34 UTC, Ali Çehreli wrote:
Agreed but that excludes using the D runtime in 'static this'
(and shared) blocks, right?
It is runtime.initialize that calls those `static this` blocks.
If my explicit call to Initialize is in a 'shared static this'
This is
On Thursday, 16 June 2022 at 13:54:52 UTC, Steven Schveighoffer
wrote:
[scope (success) lowered to finally]
[...]
Furthermore I always thought of scope guards as a means for
cleanup. Cleanup implies in my eyes removing things which have
been used in a previous task. This intended use is
Adam, thank you again!
Adding Initialize()/Terminate() to code and calling from my
application as you suggested didn't help, unfortunately. Maybe
the problem is in the scripting language I'm using (AHK) which is
not designed to handle situations like these.
In any case, appreciate your
On Wednesday, 15 June 2022 at 20:46:56 UTC, Steven Schveighoffer
wrote:
[...]
It has not harmed my code though. I tried throwing inside a
scope guard, and it just works, I'm not sure why you can't
throw in those?
You can but that is not acceptable for the spec explicitly
forbids that:
On Wednesday, 15 June 2022 at 16:53:13 UTC, mw wrote:
Create a simple test case, file bug at:
https://issues.dlang.org/
I tried. No luck.
On Thursday, 16 June 2022 at 08:23:20 UTC, Arafel wrote:
As you can see, it's `getMember` who is returning a reference
to the `this` instance. In my view, this is a bug according the
documentation and examples [1]. It might be that classes behave
differently, but then it should be documented.
On Friday, 10 June 2022 at 22:10:10 UTC, Ali Çehreli wrote:
[...] I am trying to finish a .cached range algorithm that
caches all elements that are in use. (It must drop old elements
so that an infinite range does not require infinite cache.)
It is supposed to evaluate elements only once.
I
On 15/6/22 14:26, cc wrote:
```d
import std.traits;
class XML {}
class Def {
@XML {
int x;
int y;
}
int z;
this() {
static foreach (sym; getSymbolsByUDA!(Def, XML)) {
}
}
}
void main() {
auto def = new Def;
}
```
```
On Monday, 13 June 2022 at 06:05:03 UTC, Tejas wrote:
Directory structure:
```sh
src
|
|--- main_file.d
|
|---parent
|
|--- driver.d
|
|--- package.d
|
|--- thing
|
|--- package.d
|
|--- first.d
On Wednesday, 15 June 2022 at 04:39:21 UTC, Mike Parker wrote:
```d
str[3..4].to!int;
```
Thanks, I got the solution based on your answer. I also created
different slicing functions. They work just fine without the
need for conversion:
```d
T solKes(string str, size_t a, size_t l)
On 16/6/22 10:55, frame wrote:
On Thursday, 16 June 2022 at 08:23:20 UTC, Arafel wrote:
This is not true. `getMember` can return the symbol to the instance or
the type/alias, depending if you pass `this` or `Def`. The last is static.
It makes no sense to use the attribute from a class
Hi,
I wonder if anyone knowledgeable can point me in the right
direction here.
I created DLL in Visual D, but when I try to use it by my
application (AHK script), DLL itself is loaded ok, but error is
set to "specified function could not be found inside the DLL".
(Same DLL that I made in C++
On 6/16/22 6:07 AM, kdevel wrote:
On Wednesday, 15 June 2022 at 20:46:56 UTC, Steven Schveighoffer wrote:
[...]
It has not harmed my code though. I tried throwing inside a scope
guard, and it just works, I'm not sure why you can't throw in those?
You can but that is not acceptable for
On Thursday, 16 June 2022 at 13:57:48 UTC, Sergeant wrote:
export int my(int a, int b)
the name here is going to be mangled, so like "_D5mydll2myiiZi"
or something like that.
You might want to add `extern(C)` to it so it keeps the simple
name "my", that might help.
On Thursday, 16 June 2022 at 13:27:25 UTC, frame wrote:
But it looks like a compiler bug since the output of
`getSymbolsByUDA` is just an alias sequence and nothing should
happen before consuming it?
Yes, this is a compiler bug. I've filed a report for it on
bugzilla:
Adam thank you, it works now!
May I ask one more question: why a code like this would work in
D-application but not in D-DLL? (also I notice some other D
functions don't work in DLL):
import std.string;
export extern(C) string my(string input)
{
string output
On 6/16/22 00:58, Salih Dincer wrote:
> I guess the developed cached() and cache() are different things,
> right?
cache caches only the front element.
https://dlang.org/library/std/algorithm/iteration/cache.html
> I tried cached()
cached() is supposed to cache as many elements as needed as
On Thursday, 16 June 2022 at 16:07:41 UTC, Sergeant wrote:
May I ask one more question: why a code like this would work in
D-application but not in D-DLL? (also I notice some other D
functions don't work in DLL):
Probably because the runtime not initialized properly. Export an
Initialize()
On 6/16/22 09:07, Sergeant wrote:
> May I ask one more question: why a code like this would work in
> D-application but not in D-DLL?
D programs generated by D compilers automatically initialize the D
runtime. You can do the same with rt_init:
pragma (crt_constructor)
extern(C) int
On Thursday, 16 June 2022 at 16:19:22 UTC, Ali Çehreli wrote:
pragma (crt_constructor)
You have to be pretty careful about this since it might not run
in the order you expect. If there's two things in the program
with a equal-priority crt constructor, they are run in arbitrary
order. In a
On 6/16/22 09:32, Adam D Ruppe wrote:
> This is why an explicit initialization call is the preferred method -
> there, the time it is called is well-defined by the user after initial
> loading is complete.
Agreed but that excludes using the D runtime in 'static this' (and
shared) blocks,
On Thursday, 16 June 2022 at 16:19:22 UTC, Ali Çehreli wrote:
On 6/16/22 09:07, Sergeant wrote:
This answer may be relevant:
https://forum.dlang.org/post/t8diks$2l79$1...@digitalmars.com
Ali, thank you, I'll take a look.
On Friday, 17 June 2022 at 05:17:20 UTC, Tejas wrote:
On Friday, 17 June 2022 at 01:04:28 UTC, Paul Backus wrote:
Nope. The way UFCS works is that allows you to call free
functions using member-function syntax, and member-function
syntax is always `object.memberName`, so UFCS only works for
On Friday, 17 June 2022 at 01:04:28 UTC, Paul Backus wrote:
Nope. The way UFCS works is that allows you to call free
functions using member-function syntax, and member-function
syntax is always `object.memberName`, so UFCS only works for
functions that have a name, not anonymous functions.
On Thursday, 16 June 2022 at 23:59:06 UTC, Antonio wrote:
Is it there any way to apply UFCS on the returned method in the
same expression?
Nope. The way UFCS works is that allows you to call free
functions using member-function syntax, and member-function
syntax is always
```d
auto doSomething(string text)
{
return (string text2)
{
import std.stdio;
writeln(text,",",text2);
};
}
void main()
{
doSomething("Hello")("X");
"X".doSomething("Hello")();
}
```
Compiler error:
```
...
onlineapp.d(13):expected 1 argument(s), not 2
```
I tried
On Saturday, 11 June 2022 at 21:50:47 UTC, Adam D Ruppe wrote:
On Saturday, 11 June 2022 at 01:20:17 UTC, harakim wrote:
The issue I'm having is that I don't understand how to assign
bounds in the nested widget. I'm sure there's a very clean
solution. I basically want a paintContent method but
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