How to detect current executable file name?

[Gary Willoughby via Digitalmars-d-learn]

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;
import std.file : thisExePath;
import std.path : dirName;

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