Hash methods

hash.rb

require 'ostruct'

class Hash
  def key_strings_to_symbols!
    r = Hash.new
    self.each_pair do |k, v|
      if k.kind_of?(String) && k =~ /^:/
        v.key_strings_to_symbols! if v.kind_of?(Hash) && v.respond_to?(:key_strings_to_symbols!)
        r[k.slice(1..-1).to_sym] = v
      else
        v.key_strings_to_symbols! if v.kind_of?(Hash) && v.respond_to?(:key_strings_to_symbols!)
        r[k] = v
      end
    end
    self.replace(r)
  end

  def to_struct!
    key_strings_to_symbols!
    r = self.values
    r.map! do |v|
      if v.kind_of?(Hash) && v.respond_to?(:to_struct!)
        v.to_struct!
      else
        v
      end
    end
    klass = Struct.new(*keys.map(&:to_sym))
    klass.new(*r)
  end
end