From: "Jean-François Trân" <jftran@...>
Date: 2008-10-21T21:55:40+09:00
Subject: Re: Ruby way to take some action only once in a loop?

2008/10/21 Robert Klemme <shortcutter@googlemail.com>:
>>> rows = ["row1", "row2"]
>>>
>>> rows.each do |row|
>>   if (first=true)..false and first
>
> Amazing!

This is awesome, but I don't get all

if I write :
foo = (first=true)..false

I've got a 'bad value for Range", but it works in a condition for if.

first is a local variable the first time in the loop but not after, I
don't understand why (the assignment first = true is not executed
each time ?).

very cute but puzzling.

   -- Jean-François.

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