How to detect current executable file name?

[SaltySugar]

On Monday, 18 February 2013 at 03:28:59 UTC, eGust wrote:
> I need to locate the directory of current executable file, but 
> I can't find how to do that in Phobos. I tried 
> core.runtime.Runtime.args[0], but failed. Is there a standard 
> method of Phobos to do that? I only know the way of Windows 
> (GetModuleFileName), but I think as a common task there should 
> be a platform-independent way to get it in the standard library.

import std.stdio;

void main (string[] args)
{
     writeln(args[0]);
}