[Issue 9608] Add introspection for templates

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=9608

--- Comment #8 from Jacob Carlborg <d...@me.com> ---
I'm interested to know if std.traits.ParameterTypeTuple (or similar) would work
with lambdas with both regular types and templated types.

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