Function findSliceRight

Returns the first slice of the array of length len from the right (starting with slice(len - 1), then slice(len - 1), etc.) which passes condition. Returns undefined if no slice of the array ending with the last element passes.

Example

import * as A from "flurp/array";
import * as N from "flurp/number";

const twoPositive = (arr: ReadonlyArray<number>) => A.count(N.isPositive)(arr) >= 2;
const firstSlice = A.findSliceRight(twoPositive);
firstSlice([2, -4, 1, -5, 6]);      // [1, -5, 6]
firstSlice([2, -4]);                // undefined