[#CLJ-1094] Zero-arity versions of every-pred and some-fn - Clojure JIRA

This patch adds zero-arity versions of every-pred and some-fn with these semantics.

(every-pred) === (constantly true)
(some-fn)    === (constantly nil)

These variants are useful in situations like the following:

;; compute-preds-for may return zero or many predicate fns
(let [preds (compute-preds-for something)]
  (filter (apply every-pred preds) some-coll))

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Tassilo Horn added a comment - 25/Oct/12 7:12 AM

This is the thread where Max Penet suggested to have 0-arity versions of the two fns:

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Tassilo Horn added a comment - 25/Oct/12 7:12 AM This is the thread where Max Penet suggested to have 0-arity versions of the two fns: https://groups.google.com/forum/?fromgroups=#!topic/clojure/IRlN-4LH_U0

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