From: Robert Klemme <shortcutter@...>
Date: 2008-02-12T16:45:23+09:00
Subject: Re: non case sensitive searching

2008/2/12, Adam Akhtar <adamtemporary@gmail.com>:
> the reg exp. looks good but when i try to apply it to help me romove
> duplicates from a list it doesnt seem to work
>
> list = %w{adam Adam bobby Bobby wild wILd}
> list.sort

The line above is ineffective because you do not sort the original list.

> list.each_index do |x|
>   list.delete_at(x) if (/list[x]/i =~ list[x+1]) #remove entries which
> have same spelling but in diff. case
> end
> puts ""
> puts list

I would use another algorithm because of efficiency:

#!/bin/env ruby

require 'set'

# ensure random order
list = %w{adam Adam bobby Bobby wild wILd}.sort_by { rand }
dups = Set.new

p list
list.delete_if {|w| not dups.add? w.downcase }
p list

Kind regards

robert


-- 
use.inject do |as, often| as.you_can - without end