hara.math.base.random — hara/math 3.0.11

+default+ clj

rand clj

(rand)

(rand rng)

returns a random double between 0 and 1

(rand) ;;0.19755427425784822 => number?

(rand (rand-gen)) ;;0.8479218396605446 => number?

rand-gen clj

(rand-gen)

(rand-gen seed)

(rand-gen seed type)

creates a random number generator

(rand-gen) => org.apache.commons.math3.random.MersenneTwister

rand-int clj

(rand-int n)

(rand-int n rng)

returns a random integer less than n

(rand-int 100) ;; 16 => integer?

rand-normal clj

(rand-normal)

(rand-normal rng)

returns a random number corresponding to the normal distribution

(rand-normal) ;;-0.6591021470679017 => number?

rand-nth clj

(rand-nth coll)

(rand-nth coll rng)

returns a random element in an array

(rand-nth [:a :b :c]) => #{:a :b :c}

rand-seed! clj

(rand-seed! seed)

(rand-seed! rng seed)

sets the seed of a given random number generator

(-> (rand-gen) (rand-seed! 10) (rand)) => 0.77132064549269