From: raphael teller <raphael.teller@...>
Date: 2011-10-19T22:09:44+09:00
Subject: why doesn't this work?

hey, I am a C programmer that decided to learn Ruby. I got some
exercises to do, but I'm having some trouble in this (silly)one:

Problem Statement
Given a sentence containing multiple words, find the frequency of a
given word in that sentence.

i wrote the code below

def find_frequency(sentence, word)
  array = Array.new
  array << sentence.split(/ /)
  array.delete_if {|i| i.to_s.downcase != word.downcase}.length
end

but it appears that (i.to_s.downcase) is always different from
(word.downcase), even if the words are the same. can someone explain it
to me, please?

thanks

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