# Overview ## ## Pattern


`pattern.is()`	Checks whether the `$value` is a map pattern.		pattern.is
Variables			variables

## Pick


`pick.key-substring()`	Returns a copy of `$map` with keys of `$substrings`.	pick.key-substring
`pick.key-type()`	Returns a map with values of `$types`.	pick.key-type
`pick.pattern()`	Returns a copy of `$map` filtered by using pattern.	pick.pattern
`pick.type()`	Picks the properties with values and/or keys of the specified type.	pick.type
`pick.value-type()`	Picks the properties with values of the specified `$types`.	pick.value-type

## Map


`map.deep-merge-key()`	Merges `$map` with retrieved values from `$keys` of this `$map`.		map.deep-merge-key
`map.deep-merge()`	Merges multiple maps by using sass original `deep-merge()`.	modified	map.deep-merge
`map.get()`	Returns the value associated with `$key` in `$map`, and returns `$fallback` if returned is `null`.	modified	map.get
`map.has-keys()`	Checks whether `$map` contains `$keys`.		map.has-keys
`map.key-replace()`	Returns the map with key `$replace` replaced by `$replacement`.		map.key-replace
`map.pick()`	Returns a copy of `$map` of `$keys`.		map.pick
`map.remove-type()`	Removes the properties from `$map` where values are of `$types`.		map.remove-type
`map.remove()`	The `map.remove()` function with unified `map.remove()` and `deep-remove()` returns a copy `$map` without `$keys`.	modified	map.remove
`map.retrieve()`	Retrieves a value from `$map` by a `$method` get or pick with a `$key`.		map.retrieve
`map.set()`	Sets the `$allowed` `$value` under `$key` in `$map`.	modified	map.set
`map.update()`	Allows to set multiple key-value sets in a `$map`.		map.update
`map.values()`	Returns all values or values of `$keys` from `$map`.	modified	map.values

[^1]: The function modify original `map.deep-merge()` by adding arbitrary [`$maps...`](https://docs.angular-package.dev/sass/map.deep-merge#usdmaps...) argument, to deep merge multiple maps. [^2]: Modified by removing arbitrary argument `$keys...` and instead, adding [`$fallback`](https://docs.angular-package.dev/sass/map.get#usdfallback-null) value. To get the nested value use key as comma-separated list. This way of providing key as comma-separated list is consistent with [`map.remove()`](https://docs.angular-package.dev/sass/map/map.remove) and [`map.set()`](https://docs.angular-package.dev/sass/map/map.set) functions. [^3]: Modified by adding deep remove on key as comma-separated list. This way of providing key is consistent with a [`map.set()`](https://docs.angular-package.dev/sass/map/map.set) and [`map.get()`](https://docs.angular-package.dev/sass/map/map.get) functions. [^4]: Original sass `map.set()` function modified, by adding [`$allowed...`](https://docs.angular-package.dev/sass/map.set#usdallowed...) arbitrary argument to check if `$value` is allowed to be set. [^5]: The modified `map.values()` function, by adding arbitrary parameter [`$keys...`](https://docs.angular-package.dev/sass/map.values#usdkeys...) to return values of the specified keys.