hello = "hello"
world = "world"
_ = (using nil) ->
hello = 3223
_ = (a using nil) ->
hello = 3223
a = 323
_ = (a,b,c using a,b,c) ->
a,b,c = 1,2,3
world = 12321
_ = (a,e,f using a,b,c, hello) ->
a,b,c = 1,2,3
hello = 12321
world = "yeah"
_ = (using nil) ->
hello or= 2