joyrexus · December 16, 2015 10:58
diff --git a/power.coffee b/power.coffee
 powerset = (S) ->
    P = [[]]
    P.push P[j].concat S[i] for j of P for i of S
    P
diff --git a/powerset.coffee b/powerset.coffee
 {_} = require 'underscore'

 powerset = (set) ->
  f = (memo, x) -> 
    memo.concat _.map memo, (y) -> y.concat x
  _.reduce set, f, [[]]
	powerset = (S) ->
	P = [[]]
	P.push P[j].concat S[i] for j of P for i of S
	P
	{_} = require 'underscore'

	powerset = (set) ->
	f = (memo, x) ->
	memo.concat _.map memo, (y) -> y.concat x
	_.reduce set, f, [[]]