Contents

module ArrayExtensions

  # from Active Support library
  def sum(identity = 0, &block)
    return identity unless size > 0

    if block_given?
      map(&block).sum
    else
      inject { |sum, element| sum + element }
    end
  end

end

Array.send :include, ArrayExtensions

Version data entries

3 entries across 3 versions & 2 rubygems

Version	Path
ulla-0.9.9.2	lib/array_extensions.rb
semin-ulla-0.9.9.1	lib/array_extensions.rb
ulla-0.9.9.1	lib/array_extensions.rb