▸ mapip<Q, T>(arr: Q, callback?: ArrayCBT<T>, thisArg?: unknown): Q

A non-spec compliant fast Array map that modifies the input array and maps in-place.

remarks

The mapip function should be used with caution due to its destructive nature. We see promising use cases where you may iterate a map that is not used for any other purpose. Consider the following: const users = [111, 112, 113, 114].map(id => database.fetchById(id)); The user ID array is not used, but all other traditional map implementations make an unnecessary allocation.

If you are looking for raw speed, use the unsafe version, which outperforms everybody.

see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map

Type parameters:

Name	Type	Default	Description
Q	unknown	unknown[]	The type of the array-like being provided.
T	-	Q[keyof Q]	The type of elements in the array-like being provided.

Parameters:

Name	Type	Description
arr	Q	The input array-like to map through.
callback	ArrayCBT<T>	The callback provided to produce mapped results. This iteratee is invoked with three arguments: value, index|key, and arr.
thisArg	unknown	The value to use as this when executing callback.

Returns: Q

Q - The modified input

Defined in: safe/array/mapip.ts:28