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import { unzipWith as unzipWithToolkit } from 'es-toolkit'; | ||
import { unzipWith as unzipWithLodash } from 'lodash'; | ||
import { bench, describe } from 'vitest'; | ||
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describe('unzipWith', () => { | ||
bench('es-toolkit/unzipWith', () => { | ||
unzipWithToolkit( | ||
[ | ||
[1000, 2000], | ||
[3000, 4000], | ||
[50000, 60000], | ||
], | ||
(a, b, c) => a + b + c | ||
); | ||
}); | ||
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bench('lodash/unzipWith', () => { | ||
unzipWithLodash( | ||
[ | ||
[1000, 2000], | ||
[3000, 4000], | ||
[50000, 60000], | ||
], | ||
(a, b, c) => a + b + c | ||
); | ||
}); | ||
}); |
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# unzipWith | ||
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결합되어 있는 2차원 배열을 1차원 배열로 풀고, `iteratee` 함수로 값을 변환해서 새로운 배열을 반환해요. | ||
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## 인터페이스 | ||
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```typescript | ||
function unzipWith<T, R>(target: readonly T[][], iteratee: (...args: T[]) => R): R[]; | ||
``` | ||
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### 파라미터 | ||
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- `target` (`T[][]`): 결합을 풀고 변환할 배열이에요. | ||
- `iteratee` (`(...args: T[]) => R`): 결합이 풀린 배열을 변환할 함수예요. | ||
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### 반환 값 | ||
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(`R[]`): 결합을 풀고 변환된 값들로 만들어진 새로운 배열이에요. | ||
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## 예시 | ||
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```typescript | ||
const nestedArray = [ | ||
[1, 2], | ||
[3, 4], | ||
[5, 6], | ||
]; | ||
const result = unzipWith(nestedArray, (item, item2, item3) => item + item2 + item3); | ||
// [9, 12] | ||
``` |
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# unzipWith | ||
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Unzips an array of arrays, applying an `iteratee` function to regrouped elements. | ||
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## Signature | ||
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```typescript | ||
function unzipWith<T, R>(target: T[][], iteratee: (...args: T[]) => R): R[]; | ||
``` | ||
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### Parameters | ||
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- `target`(`T[][]`): The nested array to unzip. This is an array of arrays, where each inner array contains elements to be unzipped. | ||
- `iteratee` (`(...args: T[]) => R`): A function to transform the unzipped elements. | ||
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### Returns | ||
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(`R[]`): A new array of unzipped and transformed elements. | ||
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## Examples | ||
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```typescript | ||
const nestedArray = [ | ||
[1, 2], | ||
[3, 4], | ||
[5, 6], | ||
]; | ||
const result = unzipWith(nestedArray, (item, item2, item3) => item + item2 + item3); | ||
// [9, 12] | ||
``` |
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import { describe, expect, it } from 'vitest'; | ||
import { unzipWith } from './unzipWith'; | ||
import { zip } from './zip'; | ||
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describe('unzipWith', () => { | ||
it('should unzip arrays correctly with an iteratee', () => { | ||
const zipped = zip([10, 20, 30], [40, 50, 60], [70, 80, 90]); | ||
const result = unzipWith(zipped, (item, item2, item3) => item + item2 + item3); | ||
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expect(result).toEqual([60, 150, 240]); | ||
}); | ||
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it('should handle arrays of different lengths', () => { | ||
const zipped = zip([1, 20, 300, 4000], [100, 200, 300]); | ||
const result = unzipWith(zipped, (item, item2, item3, item4) => item + item2 + item3 + item4); | ||
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expect(result).toEqual([4321, NaN]); | ||
}); | ||
}); |
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/** | ||
* Unzips an array of arrays, applying an `iteratee` function to regrouped elements. | ||
* | ||
* @template T, R | ||
* @param {T[][]} target - The nested array to unzip. This is an array of arrays, | ||
* where each inner array contains elements to be unzipped. | ||
* @param {(...args: T[]) => R} iteratee - A function to transform the unzipped elements. | ||
* @returns {R[]} A new array of unzipped and transformed elements. | ||
* | ||
* @example | ||
* const nestedArray = [[1, 2], [3, 4], [5, 6]]; | ||
* const result = unzipWith(nestedArray, (item, item2, item3) => item + item2 + item3); | ||
* // result will be [9, 12] | ||
*/ | ||
export function unzipWith<T, R>(target: readonly T[][], iteratee: (...args: T[]) => R): R[] { | ||
const maxLength = Math.max(...target.map(innerArray => innerArray.length)); | ||
const result: R[] = new Array(maxLength); | ||
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for (let i = 0; i < maxLength; i++) { | ||
const group = new Array(target.length); | ||
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for (let j = 0; j < target.length; j++) { | ||
group[j] = target[j][i]; | ||
} | ||
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result[i] = iteratee(...group); | ||
} | ||
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return result; | ||
} |