import { bytes } from "https://deno.land/x/discord_rpc_deno@v1.1.4/deps.ts";
const { lastIndexOfNeedle } = bytes;
Returns the index of the last occurrence of the needle array in the source array, or -1 if it is not present.
The complexity of this function is O(source.length * needle.length).
Examples
Basic usage
Basic usage
import { lastIndexOfNeedle } from "https://deno.land/std@0.224.0/bytes/last_index_of_needle.ts";
const source = new Uint8Array([0, 1, 2, 1, 2, 1, 2, 3]);
const needle = new Uint8Array([1, 2]);
const notNeedle = new Uint8Array([5, 0]);
lastIndexOfNeedle(source, needle); // 5
lastIndexOfNeedle(source, notNeedle); // -1
Start index
Start index
import { lastIndexOfNeedle } from "https://deno.land/std@0.224.0/bytes/last_index_of_needle.ts";
const source = new Uint8Array([0, 1, 2, 1, 2, 1, 2, 3]);
const needle = new Uint8Array([1, 2]);
lastIndexOfNeedle(source, needle, 2); // 1
lastIndexOfNeedle(source, needle, 6); // 3
Defining a start index will begin the search at the specified index in the source array.