Function arrayGetOrExtendWith

arrayGetOrExtendWith<T extends object>(
    arr: T[],
    index: number,
    f: (index: number) => T,
): T
Gets the element at the given index, extending via a factory function if out of bounds.
Type Parameters
- T extends object
  Element type.
Parameters
- arr: T[]
  The array.
- index: number
  Non-negative index.
- f: (index: number) => T
  Factory called with index to create new entries.
Returns T
The element at index.

Throws
If index is negative.
- Defined in src/data-structure/array.ts:58