I'm trying to instantiate a std.container.Array of a given class (named Material), by a simple
Array!Material _myStuff;
I get two compile errors stating the following:

C:\D\dmd2\windows\bin\..\..\src\phobos\std\container\array.d(85):
Error: template std.algorithm.initializeAll cannot deduce function from argument types !()(Material[]), candidates are:
  C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(1502):
    std.algorithm.initializeAll(Range)(Range range)
    if (isInputRange!Range
      && hasLvalueElements!Range
      && hasAssignableElements!Range)
  C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(1530):
    std.algorithm.initializeAll(Range)(Range range)
    if (is(Range == char[]) || is(Range == wchar[]))
C:\D\dmd2\windows\bin\..\..\src\phobos\std\container\array.d(825): Error: template std.algorithm.copy cannot deduce function from argument types !()(Range, Range), candidates are:
  C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(7808):
    std.algorithm.copy(Range1, Range2)(Range1 source, Range2 target)
    if (isInputRange!Range1 && isOutputRange!(Range2, ElementType!Range1))

Any idea about what might be happening? I can't give a quick minimal example of the code since it is quite complex (and I failed at using dustmite trying to minimize it)

On Monday, 2 March 2015 at 14:08:29 UTC, Francesco Cattoglio wrote:
> I'm trying to instantiate a std.container.Array of a given class (named Material), by a simple
> Array!Material _myStuff;
> I get two compile errors stating the following:
>
> C:\D\dmd2\windows\bin\..\..\src\phobos\std\container\array.d(85):
> Error: template std.algorithm.initializeAll cannot deduce function from argument types !()(Material[]), candidates are:
>   C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(1502):
>     std.algorithm.initializeAll(Range)(Range range)
>     if (isInputRange!Range
>       && hasLvalueElements!Range
>       && hasAssignableElements!Range)
>   C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(1530):
>     std.algorithm.initializeAll(Range)(Range range)
>     if (is(Range == char[]) || is(Range == wchar[]))
> C:\D\dmd2\windows\bin\..\..\src\phobos\std\container\array.d(825): Error: template std.algorithm.copy cannot deduce function from argument types !()(Range, Range), candidates are:
>   C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(7808):
>     std.algorithm.copy(Range1, Range2)(Range1 source, Range2 target)
>     if (isInputRange!Range1 && isOutputRange!(Range2, ElementType!Range1))
>
> Any idea about what might be happening? I can't give a quick minimal example of the code since it is quite complex (and I failed at using dustmite trying to minimize it)

Try to reduce your Material class for a small failing example. It's probably your constructors or opAssign or something like that. Anyway, it's a bug if template errors from the implementation bubble up, so please file a report.

On Monday, 2 March 2015 at 14:14:19 UTC, Tobias Pankrath wrote:
> Try to reduce your Material class for a small failing example. It's probably your constructors or opAssign or something like that. Anyway, it's a bug if template errors from the implementation bubble up, so please file a report.
I'm still trying now, with no luck.
I also tried to get a Material[] instead of an Array!Material. It compiles, but when I call std.algorithm.sort on it I get another funny error, which apparently not even google can find except for one lonely test unit:

C:\D\dmd2\windows\bin\..\..\src\phobos\std\range.d(2222): Error: cannot have parameter of function type void()
C:\D\dmd2\windows\bin\..\..\src\phobos\std\range.d(2278): Error: cannot have parameter of function type void()
C:\D\dmd2\windows\bin\..\..\src\phobos\std\range.d(2306): Error: cannot have parameter of function type void()

Following a few more lines concerning who tried to instantiate it:
....\src\phobos\std\range.d(8385): Error: template instance std.range.stride!(Material[]) error instantiating
....\src\phobos\std\algorithm.d(9383): instantiated from here: SortedRange!(Material[], "a.step < b.step")
....\material.d(15): instantiated from here: sort!("a.step < b.step", cast (SwapStrategy)0, Material[])

(".step" is a class member variable, it's a simple int)
I'm really clueless... :P

On Mon, 02 Mar 2015 14:40:50 +0000, Francesco Cattoglio wrote:

did you tried to dustmite[1] it?

[1] https://github.com/CyberShadow/DustMite/wiki

On Monday, 2 March 2015 at 14:46:31 UTC, ketmar wrote:
> On Mon, 02 Mar 2015 14:40:50 +0000, Francesco Cattoglio wrote:
>
> did you tried to dustmite[1] it?
>
> [1] https://github.com/CyberShadow/DustMite/wiki

I tried to "dub dustmite", but it failed with a "object.Exception@DustMite\dustmite.d(220): Initial test fails"

The dustmite version is the one that was bundled with dmd 2.066.1-rc2.

I'll update dmd in the mean time, but I have a feeling that this is not related.

> I'm really clueless... :P

Something is wrong with your Material class, but you'll need to show us a reduced example.

On Monday, 2 March 2015 at 15:01:55 UTC, Tobias Pankrath wrote:
>> I'm really clueless... :P
>
> Something is wrong with your Material class, but you'll need to show us a reduced example.

After a really long time I finally found what was wrong.

http://dpaste.dzfl.pl/16d202b7124d

Wow, I honestly could have NEVER foreseen this.
This is all it takes for a class being unusable in a std.container.Array
class MyClass
{
	void init();
}

On Monday, 2 March 2015 at 15:14:49 UTC, Francesco Cattoglio wrote:
> On Monday, 2 March 2015 at 15:01:55 UTC, Tobias Pankrath wrote:
>>> I'm really clueless... :P
>>
>> Something is wrong with your Material class, but you'll need to show us a reduced example.
>
> After a really long time I finally found what was wrong.
>
> http://dpaste.dzfl.pl/16d202b7124d
>
> Wow, I honestly could have NEVER foreseen this.
> This is all it takes for a class being unusable in a std.container.Array
> class MyClass
> {
> 	void init();
> }

.init is a special property of every type: http://dlang.org/property.html#init

On 03/02/2015 07:14 AM, Francesco Cattoglio wrote:
> On Monday, 2 March 2015 at 15:01:55 UTC, Tobias Pankrath wrote:
>>> I'm really clueless... :P
>>
>> Something is wrong with your Material class, but you'll need to show
>> us a reduced example.
>
> After a really long time I finally found what was wrong.
>
> http://dpaste.dzfl.pl/16d202b7124d
>
> Wow, I honestly could have NEVER foreseen this.
> This is all it takes for a class being unusable in a std.container.Array
> class MyClass
> {
>      void init();
> }

Existing issue:

  https://issues.dlang.org/show_bug.cgi?id=12545

Ali