Thanks for answer. You are right, my example doesn't work :p However, I still think that currying is important as it simplifies nested code a lot.
Maybe:
(map {+ 10} '(1 2 3))
Or maybe, it should just be a convention in arc that when not enough parameters are given, a currying function is returned.
So we could do:
(map (+ 10) '(1 2 3))
even if I know it may break a lot of things :p
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Also, I feel that, from a good coding perspective, x is great as a temporary variable in []. In fact, it might be a good thing that the programmer is forced to use a good variable name instead of x for normal arguments.
To take your example:
(def testify (x)
(if (isa x 'fn) x [is _ x]))
(def testify (type)
(if (isa type 'fn) type [is x type]))
