collections

stdlib::rss::collections

Generic array and map helpers.

Import

use stdlib::rss::collections;

Function	Description
`index_of`	Returns the first index of a value in an array, or -1 when it is absent.
`contains`	Returns whether an array contains a value.
`reverse`	Returns a reversed copy of an array.
`dedup`	Returns an array with duplicate values removed.
`has`	Returns whether a map contains a key.
`get_or`	Returns a map value or a fallback when the key is absent.
`values`	Returns the values from a map as an array.
`entries`	Returns the [key, value] pairs from a map as an array.
`merge`	Merges two maps, preferring values from rhs for duplicate keys.

pub fn index_of<T>(values: [T], needle: T) -> int

Returns the first index of a value in an array, or -1 when it is absent.

pub fn contains<T>(values: [T], needle: T) -> bool

Returns whether an array contains a value.

pub fn reverse<T>(values: [T]) -> [T]

Returns a reversed copy of an array.

pub fn dedup<T>(values: [T]) -> [T]

Returns an array with duplicate values removed.

pub fn has<K, V>(map: map<V>, key: K) -> bool

Returns whether a map contains a key.

pub fn get_or<K, V>(map: map<V>, key: K, fallback: V) -> V

Returns a map value or a fallback when the key is absent.

pub fn values<V>(map: map<V>) -> [V]

Returns the values from a map as an array.

pub fn entries<K, V>(map: map<V>) -> [[K, V]]

Returns the [key, value] pairs from a map as an array.

pub fn merge<V>(lhs: map<V>, rhs: map<V>) -> map<V>

Merges two maps, preferring values from rhs for duplicate keys.