_concat

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_concat

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