/ Ruby on Rails
/
method

[]

[](*args)
public

No documentation available.

# File activesupport/lib/active_support/ordered_hash.rb, line 73
      def self.[](*args)
        ordered_hash = new

        if (args.length == 1 && args.first.is_a?(Array))
          args.first.each do |key_value_pair|
            next unless (key_value_pair.is_a?(Array))
            ordered_hash[key_value_pair[0]] = key_value_pair[1]
          end

          return ordered_hash
        end

        unless (args.size % 2 == 0)
          raise ArgumentError.new("odd number of arguments for Hash")
        end

        args.each_with_index do |val, ind|
          next if (ind % 2 != 0)
          ordered_hash[val] = args[ind + 1]
        end

        ordered_hash
      end

1Note

Example

Manfred ยท Dec 27, 2012

NOTE: you pass all the keys and values in one long list:

fruit = ActiveSupport::OrderedHash[
  'apple',      'Apple',
  'banana',     'Banana',
  'kiwi',       'Kiwi fruit',
]

fruit.keys => ["apple", "banana", "kiwi"]