Skip to main content

Function: index()

index<Value>(iterable): Iterable<[number, Value], any, any>

Returns an iterable equivalent to iterable except each value of iterable is placed in an entry containing the value's 0-based index in the iteration order followed by the value itself.

Type Parameters​

• Value

Parameters​

• iterable: Iterable<Value, any, any>

Returns​

Iterable<[number, Value], any, any>

Example​

console.log(
  pipe(
    [`sloth`, `more sloth`, `even more sloth`],
    index,
    reduce(toArray()),
  ),
)
//=> [ [ 0, 'sloth' ], [ 1, 'more sloth' ], [ 2, 'even more sloth' ] ]

Defined in​

transforms.d.ts:287