From: roob noob <lists@...>
Date: 2012-05-18T10:38:33+09:00
Subject: Re: what is going wrong here? The case of the noob not understanding initialize

First let me thank you for all of the help you have been :). It is much 
appreciated, I find that the more I learn Ruby and start to get a grasp 
on the basics, the more questions I end up having that are not easily 
answered by prepackaged guides, ie: I need to start asking people.

Second, how does this look? These are snippets from a class that 
estimates password entropy. Before I was using instance variables for 
@entropy_bits and calling methods like in my previous examples, now I am 
trying to use inject I think I at least come close to doing it right. My 
program does work anyway.


 def estimate_password_entropy(password)

    evaluate_entropy = [
    contains_dictionary_word?(password),
    contains_special_character?(password),
    contains_upcase_character?(password),
    contains_lowcase_character?(password),
    contains_number?(password),
    length_estimated_entropy(password)
    ]
    puts evaluate_entropy.to_s
    entropy_bits = evaluate_entropy.inject(:+)
  end

 def contains_dictionary_word?(password)
  entropy_bits = 0
  passed_dictionary_test = true
  File.open("#{RELATIVEPATH}/data/dictionary") do |dictionary|
    while line = dictionary.gets
      passed_dictionary_test = false and break if 
password.include?(line.chop)
    end
    entropy_bits = 6 if passed_dictionary_test and password.length > 4
    end
    return entropy_bits
  end

#all other tests fit the following pattern

  def contains_special_character?(password)
    entropy_bits = 0
    special_characters = %w{ ~ ! @ # $ % ^ & * ( ) _ - + = \{ [  ] | \ : 
; " ' < , > . ? / \} }
    special_characters.each do |special_character|
    if password.include?(special_character) then entropy_bits = 1.5 and 
break
     end
    end
    return entropy_bits
  end

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