Function removeAt

removeAt<T>(array, index): T | undefined
Remove and return a value at a specific index in an array.
Type Parameters
- T
Parameters
- array: T[]
  The array of interest.
- index: number
  The index of the value to remove. Negative values are taken as an offset from the end of the array.
Returns T | undefined
The value at the specified index, or undefined if the index is out of range.

Complexity
Linear.

Undefined Behavior
An index which is non-integral.

Example
```
import { ArrayExt } from '@lumino/algorithm';

let data = [0, 12, 23, 39, 14, 12, 75];
ArrayExt.removeAt(data, 2);   // 23
ArrayExt.removeAt(data, -2);  // 12
ArrayExt.removeAt(data, 10);  // undefined;
```
- Defined in array.ts:1121