Error: func(const(A) a) is not callable using argument types (const(A)

Biotronic via Digitalmars-d-learn digitalmars-d-learn at
Tue May 30 04:07:13 PDT 2017

On Tuesday, 30 May 2017 at 10:46:12 UTC, Andrew Edwards wrote:
> On Tuesday, 30 May 2017 at 10:37:58 UTC, Biotronic wrote:
>> On Tuesday, 30 May 2017 at 10:31:24 UTC, Daniel Kozak wrote:
>>> import std.traits : fqn = fullyQualifiedName;
>> Darnit. I just googled the template and got a result talking 
>> about fqn!T. So yeah - this code:
>> import std.traits;
>> pragma(msg, fullyQualifiedName!ImVec2);
>> pragma(msg, fullyQualifiedName!(typeof(CalcTextSize(label.ptr, 
>> null, true))));
>> --
>>   Biotronic
> This is exactly the cause. Output is follows:
>     internal.ImVec2
>     types.ImVec2
> I'm leveraging types as I try to do my own port of the lib so 
> CalcTextSize is returning an instance of ImVec2 as defined 
> types and I'm trying to assign to one I have declared in 
> internal.
> Thanks.

Pleasure. :)

I don't know why you have two different ImVec2s, but you may have 
good reasons to. If they need to be separate, you'll need to 
write a conversion function between the two for the cases where 
you have one and want the other. This could be the constructor or 
opAssign, or a standalone function if you want to be more 
explicit about it.

I'd argue that error message could be improved upon, btw.


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