vector.vector.map.md

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Vector.map() method

Constructs a vector by transforming the values of another vector.

Signature:

map(valueFromEntry: (entry: S, index: number) => S): Vector<S>;

Parameters

Parameter	Type	Description
valueFromEntry	(entry: S, index: number) => S	A function which takes an entry of the original vector and its index, and returns the corresponding entry of the new vector

Returns:

Vector<S>

The new vector

Example

const original = vectorBuilder.fromValues(1, 2, 3, 4);

const originalPlusOne = original.map(value => value + 1);
// [2, 3, 4, 5]

const originalPlusIndex = original.map((value, index) => value + index);
// [1, 3, 5, 7]