From: Tom Stut <lists@...>
Date: 2013-02-08T15:48:05+09:00
Subject: #split vs. #length. Different returns.

I am wondering why these two lines of code at the bottom, which seem to
say the same thing, produce different results.

text is simply a long string.

words = text.scan(/\w+/)

stop_words = %w{the a by on for of are with just but and to the my I has
some in}
key_words = text.split{/\w../}.select{|word| !stop_words.include?(word)}

# This line of code results in a higher percentrage of key words to stop
words 76.58%
key_words_to_stop_words = ((key_words.length.to_f /
text.split{/\w../}.count.to_f) * 100)
# This line has been rendered as a comment, but produces 75.13% when run
through ruby
# key_words_to_stop_words = ((key_words.length.to_f/ words.length.to_f)
* 100)

puts "#{key_words_to_stop_words} % of key words."

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