Rell System Library/[root]/virtual_map

virtual_map

hidden type virtual_map<K: -immutable, V0, V> : iterable<(K, V)>

Since

0.9.0

Functions

pure function contains(key: K): boolean

Checks if the map contains a key.

pure function empty(): boolean

Checks if the map is empty.

pure function get(key: K): V

Gets the value associated with a key in the map. Fails if the key is not found.

pure function <R: +V> get_or_default(key: K, default: R): R

Gets the value associated with a key in the map, or a default value if the key is not found.

pure function get_or_null(key: K): V?

Gets the value associated with a key in the map, returning null if the key is not found.

pure function join_to_text([separator: text], [prefix: text], [postfix: text], [limit: integer?], [truncated: text], [transform: ((K, V)) -> text]): text

Creates a text from all the elements separated using separator and using the given prefix and postfix if supplied.

If the iterable is large, you can specify a non-negative value of limit, in which case only the first limit of elements will be appended, followed by the truncated text (which defaults to "...").

pure function keys(): set<K>

(alias) pure function ~~len~~(): integer

Gets the size of the map.

Alias

pure function size(): integer

Gets the size of the map.

(alias) pure function str(): text

Converts the map to text.

Alias

function to_full(): map<K, V0>

pure function to_text(): text

Converts the map to text.

pure function values(): list<V>