Hi.

Is there a more elegant way to write the template arg restrictions for display?

Thanks.


Laeeth

import std.stdio;
import std.traits;

struct Bar(bool test)
{
	double a;
	static if(test)
		double b;
}

void display(T)(T a)
if (__traits(isSame, TemplateOf!(T), Bar))
{
	writefln("%s",a);
}

void main(string[] args)
{
	auto a=Bar!false(1.0);
	auto b=Bar!true(1.0,2.0);
	a.display;
	b.display;
}

On Monday 07 September 2015 17:51, Laeeth Isharc wrote:

> Is there a more elegant way to write the template arg restrictions for display?
[...]
> void display(T)(T a)
> if (__traits(isSame, TemplateOf!(T), Bar))
> {
> 	writefln("%s",a);
> }

if (isInstanceOf!(Bar, T))

On Monday, 7 September 2015 at 16:27:21 UTC, anonymous wrote:
> On Monday 07 September 2015 17:51, Laeeth Isharc wrote:
>
>> Is there a more elegant way to write the template arg restrictions for display?
> [...]
>> void display(T)(T a)
>> if (__traits(isSame, TemplateOf!(T), Bar))
>> {
>> 	writefln("%s",a);
>> }
>
> if (isInstanceOf!(Bar, T))

Thanks !