module HashKeyOrderable

Attributes

key_order[RW]

Public Class Methods

extended(obj) click to toggle source

# File lib/hash_key_orderable.rb, line 17
def self.extended(obj)
  obj.instance_eval do
    alias :each_without_key_order :each
    alias :each :each_with_key_order
  end
end

Public Instance Methods

each_with_key_order() { |key, self| ... } click to toggle source

# File lib/hash_key_orderable.rb, line 4
def each_with_key_order(&block)
  if @key_order.nil? || @key_order.empty?
    each_without_key_order(&block)
    return self
  end
  unexist_keys = @key_order - self.keys
  actual_order = (@key_order - unexist_keys) | self.keys
  actual_order.each do |key|
    yield(key, self[key])
  end
  self
end