linq-extensions/dist/lib/iterables/distinct-iterable.js

Linq-like extension methods for JavaScript and TypeScript builtin collections

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DistinctIterable = void 0;
const iterable_1 = require("../iterable");
class DistinctIterable extends iterable_1.Iterable {
    constructor(originalIterable, selector, equalityCheck) {
        super();
        this.originalIterable = originalIterable;
        this.selector = selector;
        this.equalityCheck = equalityCheck;
    }
    *[Symbol.iterator]() {
        const iteratedElements = [];
        for (const element of this.originalIterable) {
            const mappedElement = this.selector(element);
            if (iteratedElements.all(x => !this.equalityCheck(x, mappedElement))) {
                iteratedElements.push(mappedElement);
                yield element;
            }
        }
    }
}
exports.DistinctIterable = DistinctIterable;
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