stdlib-enum.md

Module - "enum"

enum := import("enum")

Functions

• all(x, fn) => bool: returns true if the given function fn evaluates to a truthy value on all of the items in x. It returns undefined if x is not enumerable.
• any(x, fn) => bool: returns true if the given function fn evaluates to a truthy value on any of the items in x. It returns undefined if x is not enumerable.
• chunk(x, size) => [object]: returns an array of elements split into groups the length of size. If x can't be split evenly, the final chunk will be the remaining elements. It returns undefined if x is not array.
• at(x, key) => object: returns an element at the given index (if x is array) or key (if x is map). It returns undefined if x is not enumerable.
• each(x, fn): iterates over elements of x and invokes fn for each element. fn is invoked with two arguments: key and value. key is an int index if x is array. key is a string key if x is map. It does not iterate and returns undefined if x is not enumerable.`
• filter(x, fn) => [object]: iterates over elements of x, returning an array of all elements fn returns truthy for. fn is invoked with two arguments: key and value. key is an int index if x is array. It returns undefined if x is not array.
• find(x, fn) => object: iterates over elements of x, returning value of the first element fn returns truthy for. fn is invoked with two arguments: key and value. key is an int index if x is array. key is a string key if x is map. It returns undefined if x is not enumerable.
• find_key(x, fn) => int/string: iterates over elements of x, returning key or index of the first element fn returns truthy for. fn is invoked with two arguments: key and value. key is an int index if x is array. key is a string key if x is map. It returns undefined if x is not enumerable.
• map(x, fn) => [object]: creates an array of values by running each element in x through fn. fn is invoked with two arguments: key and value. key is an int index if x is array. key is a string key if x is map. It returns undefined if x is not enumerable.
• key(k, _) => object: returns the first argument.
• value(_, v) => object: returns the second argument.