From: Ben Thomas <trickster@...>
Date: 2003-03-13T01:37:03+09:00
Subject: Re: a newbie question

Thankx all for the answers. Think I'm gonna read on === since its 
something I don't even use in my ruby script :)

Ben.

Joel VanderWerf wrote:

> Gennady wrote:
>
>> That's what I've been missing in Ruby!!! Thank you very much, Daniel (and
>> Matz, of course). I just verified that Enumerable#grep simply invokes 
>> method
>> "===" on its parameter for every element, and that's exactly what I 
>> usually
>> need. And with an optional block you get "selective collect" 
>> functionality.
>> This is so great!!!
>
>
> === is one of the unsung heroes of ruby. It's a protocol that unifies 
> grep and case into a general notion of pattern matching. Here's one 
> use I like:
>
> irb> [1,2,"345","678"].grep String
> ["345", "678"]
>
>
>