[CLJ-211] Support arbitrary functional destructuring via -> and ->>

Fri, 10 Dec 2010 08:49:03 -0600

Support arbitrary functional destructuring, that is the use of
any function in any destructuring form to help unpack data in
arbitrary ways.

That is, the following examples would now work:

user=> (let [(-> str a) 1] a)
"1"

user=> (let [[a (-> str b) c] [1 2]] (list a b c))
(1 "2" nil)

user=> (let [(->> (map int) [a b]) "ab"] (list a b))
(97 98)

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