clj-toolbox.prelude — org.clojars.tanelso2/clj-toolbox 0.6.0

any-in? clj

(any-in? pred coll)

Returns true if (pred x) is logical true for any x in coll, else false.

average clj

(average coll)

Gets the average of every element in coll

average-by clj

(average-by f coll)

Gets the average of (f x) for every x in coll

defnmem clj macro

(defnmem name & fndef)

Defines a memoized function Examples: (defnmem fibonacci [x] (if (or (= 0 x) (= 1 x)) 1 (+ (fibonacci (- x 1)) (fibonacci (- x 2)))))

derefable? clj

(derefable? x)

Returns true if x is an instance of clojure.langIDeref

find-first clj

(find-first pred coll)

Returns the first x in coll for which (pred x) returns true. returns nil if none is found

into-map clj

(into-map coll)

(into-map kf coll)

(into-map kf vf coll)

Transforms coll into a hash-map by using (kf x) as the key and (vf x) as the value for each x in coll vf defaults to identity if not provided if only coll is provided, will assume coll is a list of pairs

now clj

(now)

Gets the time in milliseconds since unix epoch as a Long

parse-int clj

(parse-int s)

Shortcut for Integer/parseInt to make it easier to pass around as an argument

sum clj

(sum coll)

Gets the sum of every element in coll

sum-by clj

(sum-by f coll)

Gets the sum of (f x) for every x in coll

update! clj

(update! m k f)

Like update, but for transients