(defn some-fn
"Takes a set of predicates and returns a function f that returns the first logical true value
returned by one of its composing predicates against any of its arguments, else it returns
logical false. Note that f is short-circuiting in that it will stop execution on the first
argument that triggers a logical true result against the original predicates."
{:added "1.3"}
([p]
(fn sp1
([] nil)
([x] (p x))
([x y] (or (p x) (p y)))
([x y z] (or (p x) (p y) (p z)))
([x y z & args] (or (sp1 x y z)
(some p args)))))
([p1 p2]
(fn sp2
([] nil)
([x] (or (p1 x) (p2 x)))
([x y] (or (p1 x) (p1 y) (p2 x) (p2 y)))
([x y z] (or (p1 x) (p1 y) (p1 z) (p2 x) (p2 y) (p2 z)))
([x y z & args] (or (sp2 x y z)
(some #(or (p1 %) (p2 %)) args)))))
([p1 p2 p3]
(fn sp3
([] nil)
([x] (or (p1 x) (p2 x) (p3 x)))
([x y] (or (p1 x) (p2 x) (p3 x) (p1 y) (p2 y) (p3 y)))
([x y z] (or (p1 x) (p2 x) (p3 x) (p1 y) (p2 y) (p3 y) (p1 z) (p2 z) (p3 z)))
([x y z & args] (or (sp3 x y z)
(some #(or (p1 %) (p2 %) (p3 %)) args)))))
([p1 p2 p3 & ps]
(let [ps (list* p1 p2 p3 ps)]
(fn spn
([] nil)
([x] (some #(% x) ps))
([x y] (some #(or (% x) (% y)) ps))
([x y z] (some #(or (% x) (% y) (% z)) ps))
([x y z & args] (or (spn x y z)
(some #(some % args) ps)))))))

Vars in clojure.core/some-fn:

Used in 0 other vars

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