Proposal?

[H. S. Teoh]

What about this?

------
struct EndOfArgs { }
EndOfArgs eoa;

void func(string s, EndOfArgs _ = eoa,
	string file = __FILE__, size_t line = __LINE__)
{
	import std.stdio;
	writefln("%s:%d: msg=%s", file, line, s);
}

void main() {
	func("hello");
	func("there");
}
------


Basically, use a dummy empty struct to differentiate between real
arguments and context info.


T

-- 
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