From: Martin Elzen <martinelzen@...>
Date: 2008-04-25T21:28:42+09:00
Subject: Find.prune if ( filename[-5,5] != ".java") is odd?


Hi all.

Today I had to do a recursive touch on all Java files in a certain directory.  Since I recently found that super cool ruby Find example I figured I'd use that.  However, my first try at a solution didn't work.  In the end I just changed the script a bit and now it does work as intended, but...  I really don't understand why the first version of the example didn't work...  It's the Ruby 1.8.6 1-click-installer version, if that matters.


require "find"


Find.find( "c:/usd70.senior.2008.04.14.copy" ) do |filename|
  Find.prune if filename == "."
  Find.prune if (filename.size < 6) # shortest interesting filename == "a.java"

  # first try, if I don't comment-out the following line it just does not work as intended...
  #Find.prune if ( filename[-5,5] != ".java") # string doesn't end with ".java" ?
  #`touch #{filename}`


  `touch #{filename}` if filename[-5,5] == ".java" 

end