Convert call to a string

[H. S. Teoh via Digitalmars-d-learn]

On Wed, Feb 15, 2017 at 10:07:22PM +0000, data pulverizer via Digitalmars-d-learn wrote:
> I'd like to convert a call to a string for debug printing purposes for
> example:
> 
> 
> ```
> import std.stdio : writeln;
> void someFunction(int x, string y){}
> string myCall = debugPrint(someFunction(1, "hello"));
> writeln(myCall);
> ```
> writes:
> someFunction(1, "hello")
> 
> 
> Does this functionality exists? If not how can I construct it? Please
> note that the call `someFunction(1, "hello")` should also be executed.
[...]

Try this:

	auto debugPrint(string expr)() {
		writeln(expr);
		return mixin(expr);
	}

	string myCall = debugPrint!`someFunction(1, "hello")`;


T

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