sequence

sequence<A>(data): Maybe<readonly A[]>

Defined in: Data/Arr.ts:590

Collects an array of Maybe instances into a Maybe of array. Returns None if any element is None.

Type Parameters

A

A

Parameters

data

readonly Maybe<A>[]

Returns

Maybe<readonly A[]>

Example

Arr.sequence([Maybe.some(1), Maybe.some(2)]); // Some([1, 2])
Arr.sequence([Maybe.some(1), Maybe.none()]); // None