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51 lines
1.6 KiB
Markdown
51 lines
1.6 KiB
Markdown
# zipWith
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Combines multiple arrays into a single array using a custom combiner function.
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This function takes multiple arrays and a combiner function, and returns a new array where each element
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is the result of applying the combiner function to the corresponding elements of the input arrays.
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## Signature
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```typescript
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function zipWith<T, R>(arr1: T[], combine: (item: T) => R): R[];
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function zipWith<T, U, R>(arr1: T[], arr2: U[], combine: (item1: T, item2: U) => R): R[];
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function zipWith<T, U, V, R>(arr1: T[], arr2: U[], arr3: V[], combine: (item1: T, item2: U, item3: V) => R): R[];
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function zipWith<T, U, V, W, R>(
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arr1: T[],
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arr2: U[],
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arr3: V[],
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arr4: W[],
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combine: (item1: T, item2: U, item3: V, item4: W) => R
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): R[];
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```
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### Parameters
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- `arr1` (`T[]`): The first array to zip.
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- `arr2` (`U[]`, optional): The second array to zip.
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- `arr3` (`V[]`, optional): The third array to zip.
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- `arr4` (`W[]`, optional): The fourth array to zip.
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- `combine` (`(item1: T, item2: U, item3: V, item4: W) => R`): The combiner function that takes corresponding elements from each array and returns a single value.
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### Returns
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(`R[]`): A new array where each element is the result of applying the combiner function to the corresponding elements of the input arrays.
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## Examples
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```typescript
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// Example usage with two arrays:
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const arr1 = [1, 2, 3];
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const arr2 = [4, 5, 6];
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const result = zipWith(arr1, arr2, (a, b) => a + b);
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// result will be [5, 7, 9]
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// Example usage with three arrays:
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const arr1 = [1, 2];
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const arr2 = [3, 4];
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const arr3 = [5, 6];
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const result = zipWith(arr1, arr2, arr3, (a, b, c) => `${a}${b}${c}`);
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// result will be ['135', '246']
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```
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