Contents

class Hash
  # New Ruby 1.8.7+ constructor -- not documented, see redmine # 1385
  # <tt>Hash[[[:foo, :bar],[:hello, "world"]]] ==> {:foo => :bar, :hello => "world"}</tt>
  class << self
    alias_method :original_constructor, :[]
    def [](*args)
      return original_constructor(*args) unless args.length == 1 && args.first.is_a?(Array)
      {}.tap do |h|
        args.first.each do |arr|
          next unless arr.respond_to? :to_ary
          arr = arr.to_ary
          next unless (1..2).include? arr.size
          h[arr.at(0)] = arr.at(1)
        end
      end
    end unless (Hash[[[:test, :test]]] rescue false)
  end

  Backports.make_block_optional self, :delete_if, :each, :each_key, :each_pair, :each_value, :reject, :reject!, :select, :test_on => {:hello => "world!"}

  # Standard in Ruby 1.8.7+. See official documentation[http://ruby-doc.org/core-1.9/classes/Hash.html]
  alias_method :key, :index unless method_defined? :key
end

Version data entries

21 entries across 21 versions & 2 rubygems

Version	Path
backports-1.8.0	lib/backports/1.8.7/hash.rb