import std.meta; static assert(is(HandlerParameters!(void function(int)) == AliasSeq!int)); static assert(is(HandlerParameters!(void function(int)[]) == AliasSeq!int)); static assert(is(HandlerParameters!(void delegate(int)) == AliasSeq!int)); static assert(is(HandlerParameters!(void delegate(int)[]) == AliasSeq!int));
Parameter of Handler