     macros[op] = cb mapping.to[i]
 
 unaryFnMapping =
-  from: '√ alert! not empty'.split ' '
+  from: 'sqrt alert! not empty'.split ' '
   to: 'Math.sqrt window.log ! $empty'.split ' '
 
 expandBuiltings unaryFnMapping, (to) ->

    scope[id] = true
  scope

# Set/Map implementation

newSet =


isSetEmpty = (set) ->
  set.size is 0

newSetWith = (args...) ->
  initialized = newSet()
  for k in args by 2
    addToSet initialized, k
  initialized

newMapWith = (args...) ->
  initialized = newMap()
