index.md

$count projection

Counts values in objects, arrays or strings that are addressed by path

Signature

path (String/Array) - Path to the property, that should be counted

subject (Object) - The object that contains the requested value

TYPE SIGNATURES

String -> Object -> Number
(String, Object) -> Number
Array -> Object -> Number
(Array, Object) -> Number

EXAMPLE

const myObject = {
	rooms: {
		kitchen: {
			refrigerator: [
				'eggs',
				'beer',
				'milk'
			]
		}
	}
};

$count('rooms.kitchen.refrigerator', myObject); // returns 3

IMMUTABLE JS SUPPORT (DEPRECATED)

WARNING: Immutable JS support is deprecated. It will be removed entirely with the next major version of Plow JS (which will be 4.0.0). Until then, support for Immutable JS versions below (but not including) v4 - though discouraged - continues to work.

the following types are supported for values targeted by path:

Iterable.Indexed
Iterable.Keyed
Iterable.Set