From: Stefano Crocco <stefano.crocco@...>
Date: 2008-02-12T06:24:22+09:00
Subject: Re: non case sensitive searching

Alle Monday 11 February 2008, Adam Akhtar ha scritto:
> If i want to see if a list contains a particular word how would i go
> about doing so with letter case not being important. Normally two words
> spelt the same are not equal if they differ in case.
>
> i.e. Shell != shell
> or   ShEll != shell
>
> At first i thought simply conveting both the list and the word to search
> into uppercase thus making them the same but doing so would not be very
> efficient if the list is very big.
>
> Any ideas??

Use String#casecmp. According to ri documentation, it works as String#<=> but 
is not case sensitive. For example:

"abc" <=> "Abc"
=> 1

"abc".casecmp "Abc"
=> 0

Stefano