class String
  def to_snake_case
    gsub("::", "/").
      gsub(/([A-Z+])([A-Z][a-z])/, '\1_\2').
      gsub(/([a-z\d])([A-Z])/, '\1_\2').
      tr("-", "_").
      downcase
  end

  def to_camel_case
    return self if self !~ /_/ && self =~ /[A-Z]+.*/
    split("_").map(&:capitalize).join
  end
end