Returns a random element of the given vector. When the second argument is present it should be an instance of random number generator used to get the random position.

Merges two vectors.

Ensures that the given collection or a single value is a non-empty vector of strings. Optional function can be given to skip matching input argument and leave it as is.

Partitions a vector into pairs.

Returns a vector with the given number of randomly selected elements of the given vector. No element will be selected more than once.

Removes an element under the given index from a vector by replacing it with the last one. For the last element index it simply removes it.

Like clojure.core/shuffle but makes use of custom random number generator.

Splits vector at the given index.

Swaps two elements of a vector.