I need to ensure that range passed to function is SortedRange to use binary search. I did something like:

static if(!__traits(compiles,
	{
		ElementType!(typeof(data)) element;
		auto d = data.trisect(element);
	}
	)) assert(0, "DataRange shall be SortedRange");

It works for me, but in fact it checks if the type of 'data' have 'trisect' method and conception of SortedRange is something more than having 'trisect' method.
	I remember there is(?) some way to get general type of template (i.e. SortedRange instead of SortedRange!int), but can not find it.

http://dlang.org/phobos/std_traits.html#TemplateOf

On Wednesday, 20 August 2014 at 07:18:12 UTC, Kagamin wrote:
> http://dlang.org/phobos/std_traits.html#TemplateOf

Or isInstanceOf.

static if (__traits(isSame, TemplateOf!R, SortedRange))
static if (isInstanceOf!(SortedRange, R))

Thank you!