string_methods.rb

class String
  def camel_case
    parts = self.split
    parts.each { |p| p.capitalize! }
    parts[0].downcase!
    parts.join
  end

  def camel_case!
    parts = self.split
    parts.each { |p| p.capitalize! }
    parts[0].downcase!
    replace(parts.join)
  end

  # another way
  def camel_case
    self.downcase.split.each_with_index do |value, i|
      value.capitalize! unless i == 0
    end.join
  end

  def titleize
    small_words = %w(a an and as at but by en for if in of on or the to v v. via vs vs.)
    words = self.downcase.split
    words.first.capitalize!
    words.each do |word|
      word.capitalize unless small_words.include?(word)
    end.join(' ')
  end
  
end


class Hash
  def to_array
    self.to_a.flatten.map { |word| word.to_s }
  end
end