Module: Sbuilder::Powerset

Defined in:

lib/utils/powerset.rb

Class Method Summary

• .powerset(arr) ⇒ Object

Class Method Details

.powerset(arr) ⇒ Object

See Also:

• http://www.entish.org/wordpress/?p=676

# File 'lib/utils/powerset.rb', line 7

def self.powerset( arr )
  return arr.inject([[]]){|c,y|c.inject([]){|r,i|r+=[i,i+[y]]}}
end