From: duxieweb <duxieweb@...>
Date: 2009-11-15T18:04:32+09:00
Subject: Re: very newbie question

2009/11/15 Stefano Crocco <stefano.crocco@alice.it>:

>
> Because 0 is a true value in ruby, so !queue is false and the body of the if
> expression is not executed. In ruby, the only false values are false and nil.
>

Oh, that sounds so different from other languages that 0 is a true value.

python:
>>> x=0
>>> if (not x):
...   print "x is false"
...
x is false

perl:
# perl -le '$x=0; print "x is false" if not $x'
x is false


Thank you.