Function lastIndex

lastIndex<T>(
    arr: T[],
    predicate: (value: T, index: number, array: T[]) => boolean,
    thisArg?: any,
): Option<number>
Returns the index of the last element in the array where predicate is true, and None otherwise.
Type Parameters
- T
Parameters
- arr: T[]
  An array
- predicate: (value: T, index: number, array: T[]) => boolean
  lastIndex calls predicate once for each element of the array, in backward order, until it finds one where predicate returns true.
- OptionalthisArg: any
  If provided, it will be used as the this value for each invocation of predicate. If it is not provided, undefined is used instead.
Returns Option<number>
The index of the last item that matches the predicate, or None if no item matches.
- Defined in src/array.ts:107