From: Han Holl <han.holl@...>
Date: 2005-05-26T16:56:57+09:00
Subject: Re: if __FILE_ == $0 executed twice

On 5/26/05, nobuyoshi nakada <nobuyoshi.nakada@ge.com> wrote:
> Till 1.8, $: includes `require'd names relative to one of $LOAD_PATH,
> $0 is absolute path or relative from cwd in other hand.  So comparing
> $0 with $: had no meanings, however it might be in 1.9.
> 
I see. While thinking it over, I realize that there would remain a
race condition anyhow.
In other words, the code would always first be executed in the
required copy, because it cannot be put in $" until the entire file is
processed.
Maybe
if __FILE__ == $0 and caller(0).size == 1
isn't so bad after all.
Maybe there isn't a one-on-one replacement for Pythons 
if __name__ == '__main__'
after all.

Han Holl