jalhyd/build/util/array_reverse_iterator.js

JaLHyd, a Javascript Library for Hydraulics

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ArrayReverseIterator = void 0;
/**
 * itérateur sur un tableau dans le sens inverse (depuis la fin)
 *
 * utilisation :
 *   let arr = [1,2,3];
 *   const it = new ArrayReverseIterator<Result>(arr);
 *   for (let r of it)
 *     console.log( r );   // 3 2 1
 */
class ArrayReverseIterator {
    constructor(_arr) {
        this._arr = _arr;
        this._index = this._arr === undefined ? 0 : this._arr.length - 1;
    }
    next() {
        if (this._arr !== undefined && this._index >= 0) {
            return {
                done: false,
                value: this._arr[this._index--]
            };
        }
        else {
            return {
                done: true,
                value: null
            };
        }
    }
    [Symbol.iterator]() {
        return this;
    }
}
exports.ArrayReverseIterator = ArrayReverseIterator;
//# sourceMappingURL=array_reverse_iterator.js.map