sequency/lib/zip.js

Functional sequences for processing iterable data in JavaScript

Object.defineProperty(exports, "__esModule", { value: true });
exports.Zip = void 0;
var Sequence_1 = require("./Sequence");
var ZipIterator = /** @class */ (function () {
    function ZipIterator(iterator1, iterator2) {
        this.iterator1 = iterator1;
        this.iterator2 = iterator2;
    }
    ZipIterator.prototype.next = function (value) {
        var item1 = this.iterator1.next();
        var item2 = this.iterator2.next();
        if (item1.done || item2.done) {
            return { done: true, value: undefined };
        }
        else {
            return { done: false, value: [item1.value, item2.value] };
        }
    };
    return ZipIterator;
}());
var Zip = /** @class */ (function () {
    function Zip() {
    }
    /**
     * Returns a new sequence consisting of pairs built the elements of both sequences
     * with the same index. The resulting sequence has the length of the shortest input
     * sequence. All other elements are discarded.
     *
     * @param {Sequence<S>} other
     * @returns {Sequence<[T , S]>}
     */
    Zip.prototype.zip = function (other) {
        return (0, Sequence_1.createSequence)(new ZipIterator(this.iterator, other.iterator));
    };
    return Zip;
}());
exports.Zip = Zip;
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