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Clojure Programming/Examples/API Examples/Predicate functions
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drop-while
user=> (drop-while pos? [1 2 3 -1 -2 3 4])
(-1 -2 3 4)
filter
user=> (filter nil? [:a :b nil nil :a])
(nil nil)
user=> (filter (fn[x](= x :b)) [:a :b nil nil :a])
(:b)
not-any?
user=> (not-any? neg? [1 2 3 4 5])
true
user=> (not-any? neg? [1 2 3 -4 5])
false
remove
user=> (remove nil? [:a :b nil nil :a])
(:a :b :a)
every?
user=> (every? pos? [1 2 3 4])
true
user=> (every? pos? [0 1 2 3])
false
some
user=> (some neg? [0 1 2 -3 4])
true
user=> (some #{:gamma} [:professor :gamma])
:gamma