locutus/esm/php/array/end.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

import { getArrayLikeLength, getEntryAtCursor, getPointerState } from "../_helpers/_arrayPointers.js";
export function end(arr) {
    //  discuss at: https://locutus.io/php/end/
    // original by: Kevin van Zonneveld (https://kvz.io)
    // bugfixed by: Legaev Andrey
    //  revised by: J A R
    //  revised by: Brett Zamir (https://brett-zamir.me)
    // improved by: Kevin van Zonneveld (https://kvz.io)
    // improved by: Kevin van Zonneveld (https://kvz.io)
    //      note 1: Uses global: locutus to store the array pointer
    //   example 1: end({0: 'Kevin', 1: 'van', 2: 'Zonneveld'})
    //   returns 1: 'Zonneveld'
    //   example 2: end(['Kevin', 'van', 'Zonneveld'])
    //   returns 2: 'Zonneveld'
    const state = getPointerState(arr, true);
    if (!state) {
        return false;
    }
    const lastIndex = getArrayLikeLength(arr) - 1;
    if (lastIndex < 0) {
        return false;
    }
    const entry = getEntryAtCursor(arr, lastIndex);
    if (!entry) {
        return false;
    }
    state.setCursor(lastIndex);
    return entry[1];
}