A utility function for bmx. Returns the distance between two plushies computed as half of their multiset-distance plus their length difference.

A utility function for bmx-related genetic operators. Returns the provided :gap-free plushy with gaps randomly inserted to ensure that no gene is longer than the provided limit.

A utility for best match crossover (bmx). Returns the number of segments between (and before and after) instances of :gap.

Returns the number of points in tree, where each atom and each pair of parentheses counts as a point.

Returns the height of the nested list called tree. Borrowed idea from here: https://stackoverflow.com/a/36865180/2023312 Works by looking at the path from each node in the tree to the root, and finding the longest one. Note: does not treat an empty list as having any height.

drops the nth element from a collection

A utility function for bmx-related genetic operators. Returns the provided plushy with any over-length genes broken into non-empty pieces, recursively until all genes obey the limit.

Returns a non-lazy list if passed a seq argument. Otherwise, returns a list containing the argument.

A utility for best match crossover (bmx). Returns the segments of the plushy before/between/after instances of :gap.

filters a collection by a list of indices

Returns the first non-nil values from the collection, or returns nil if the collection is empty or only contains nil.

Returns gaussian noise of mean 0, std dev 1.

Returns the first index of an element in a collection. If the element is not present in the collection, returns -1.

FIXME: write docs

Returns lst if it is not a seq, or a non-lazy version of lst if it is.

If given a number, returns it. If given a collection, returns a member of the collection. Intended for allowing arguments to genetic operators, such as mutation rates, to take collections in addition to single values

Returns n perturbed with std dev sd.

FIXME: write docs

A utility for concurrent execution of a function. If :single-thread-mode is truthy in the final arg then this acts like mapv of f on the provided colls. Otherwise it acts like pmap but: 1) the colls should be finite, 2) the returned sequence will not be lazy, and will in fact be a vector, and 3) calls to f may occur in any order, to maximize multicore processor utilization.

Takes a map and prints it, with each key/value pair on its own line.

Returns a random instruction from a supplied pool of instructions, evaluating ERC-producing functions to a constant literal.

A utility function for bmx-related genetic operators. Returns the provided plushy with any empty genes (regions before/between/after instances of :gap) removed.

FIXME: write docs

Returns a zipper for nested sequences, given a root sequence