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pipelined

findIndex

findIndex<A>(predicate): (data) => Maybe<number>

Defined in: Utils/Arr.ts:110

Returns the index of the first element matching the predicate, or None.

Type Parameters

Section titled “Type Parameters”

A

Section titled “A”

A

Parameters

Section titled “Parameters”

predicate

Section titled “predicate”

(a) => boolean

Returns

Section titled “Returns”

(data): Maybe<number>

Parameters

Section titled “Parameters”

data

Section titled “data”

readonly A[]

Returns

Section titled “Returns”

Maybe<number>

Example

Section titled “Example”
pipe([1, 2, 3, 4], Arr.findIndex(n => n > 2)); // Some(2)