_concat

源码
​https://github.com/ddzy/ts-utility-plugins/tree/master/src/ddzy/utility/array/_concat​
说明
将给定的任意数量的值追加至源数组
用法
_concat.ts
_concat.test.ts
import { _concat } from "./ddzy/utility/array/_concat";
​
// ? 纯数字数组
const s1 = [1, 2, 3, 4, 5];
const p1 = _concat<number>(s1, 6, 7, 8);
console.log(p1);
s1.push(6);
console.log(s1);
​
console.log('------------------');
​
// ? 任意值数组
const s2: any[] = [1, 0, '', undefined, null, [[100]], { name: 'ddzy' }];
const p2 = _concat<any>(s2, [[200], [300]], { age: 21 });
console.log(p2);
​
console.log('-------------------');
import { _concat } from "../../utility/array/_concat";
​
describe('_concat', () => {
  test('_concat should return an new array being composed of number', () => {
    const received = [1, 2, 3, 4, 5];
    const expected = [1, 2, 3, 4, 5, 6, 7, 8];
​
    const result = _concat<number>(received, 6, 7, 8);
​
    for (const [i, v] of result.entries()) {
      expect(v).toBe(expected[i]);
    }
​
    // Should not change the origin array
    expect(received.length).toBe(5);
  });
​
  test('_concat should return an new array being composed of any value', () => {
    const received: any[] = [1, 0, '', undefined, null, [[100]], { name: 'ddzy' }];
    const expected = 10;
​
    const result = _concat<any>(received, [[200], [300]], { age: 21 });
​
    expect(result.length).toBe(expected);
  });
});
compact
difference
Last updated 3 months ago