rc-js-util/docs/rc-js-util.arraycopyinto.md

A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.

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## arrayCopyInto() function

Make an array contain the same items as another.

**Signature:**

```typescript
export declare function arrayCopyInto<TItem>(from: ArrayLike<TItem>, to: TItem[], startIndex?: number, length?: number): void;
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

from


</td><td>

ArrayLike&lt;TItem&gt;


</td><td>

The array to copy from.


</td></tr>
<tr><td>

to


</td><td>

TItem\[\]


</td><td>

The array to copy into and resize.


</td></tr>
<tr><td>

startIndex


</td><td>

number


</td><td>

_(Optional)_ The index to start with in the from array.


</td></tr>
<tr><td>

length


</td><td>

number


</td><td>

_(Optional)_ The index to end with in the from array.


</td></tr>
</tbody></table>
**Returns:**

void

## Remarks

See [arrayCopyInto()](./rc-js-util.arraycopyinto.md)<!-- -->.