On Friday, 14 October 2016 at 09:15:40 UTC, Marc Schütz wrote:
On Wednesday, 12 October 2016 at 16:57:50 UTC, Meta wrote:
There's also a *very* ugly hack you can do:
//A template function's .stringof is of the format <function
name>(<template args>)(<function args>)
//so match on the number of brackets to determine whether it's
a template function or not
enum isTemplateFunction = __traits(isTemplate, f)
&& fstr.balancedParens('(', ')')
&& (fstr.canFind("if")
|| fstr.count!(c =>
cast(bool)c.among!('(', ')')) == 4);
This won't work if there are additional parens _inside_
compile/runtime parameters, though, which there is ample
opportunity for:
T func(T : U!(int, string), U)(const(T) param =
defaultValue!(const(T))());
You're right... And this is why it's such an ugly hack. It can
probably be improved upon but I would not recommend trying,
although there's no other way I can think of to determine whether
a template is a function template.