Module: ArrayExtensions

Defined in:
lib/array_extensions.rb

Instance Method Summary collapse

Instance Method Details

#sum(identity = 0, &block) ⇒ Object

from Active Support library



4
5
6
7
8
9
10
11
12
 
# File 'lib/array_extensions.rb', line 4

def sum(identity = 0, &block)
  return identity unless size > 0

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