On Monday, June 10, 2013 10:20:20 PM UTC+2, Steven Degutis wrote:
> Sometimes I've wanted a function that takes a value and a bunch of tests,
> and returns it if it passes every test, otherwise nil.
>
> Does this seem useful enough to put into core?
>
>
A simpler variant already exists in core, named every-pred:
(let [pred (every-pred string?
#(.startsWith % "f")
#(.contains % "oo"))]
(pred "foo"))
;;=> true
(let [pred (every-pred string?
#(.startsWith % "f")
#(.contains % "NOT IN THE STRING"))]
(pred "foo"))
;;=> false
The main difference being that the function is higher order and independent
of the input given.
-- JN
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