From: Kyle Hunter <keletmaster@...>
Date: 2008-02-22T07:24:39+09:00
Subject: More efficient comparing

Hello,

I've got an array that holds urls. Example Element:
http://bla.random.com/bla.jpg.

I also have images in a directory. I'd like my script to compare the
bla.jpg from the URL with all files in a directory to make sure it's not
a duplicate of something that's already there - if it is - delete it
from the array. My current way of doing it uses quite a bit of
resources, was wondering if someone could show me a more efficient
example if possible.

Current Code:
Dir["#{$baseDir}/#{board}/#{$dateString}/**"].each do |file|
      $imgArray.delete_if{
        |i| i =~ /#{file.split('/').pop}/
      }
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