# deleteRange

## Category
Array

## Arity
**Binary** — `<array> deleteRange [startIndex, count]`.

```
<array> deleteRange <array>   // right side = [startIndex, count]
```

## Description
Removes a range of elements from the array. The right operand is an array of two numbers: `[startIndex, count]`. Removes `count` elements starting at `startIndex`. No return value (void).

## How It Works
Packs the parameters into an array on the right side (SQ# convention for 2+ parameter commands). Validates bounds, then calls `List<Value>.RemoveRange(startIndex, count)`.

## Usage

### Remove range
```sqf
_arr = [1, 2, 3, 4, 5, 6];
_arr deleteRange [1, 2];       // remove 2 elements starting at index 1
                                // _arr is [1, 4, 5, 6]
```

### Remove from middle
```sqf
_arr = ["keep", "junk1", "junk2", "keep2"];
_arr deleteRange [1, 2];       // _arr is ["keep", "keep2"]
```

### Clear portion of array
```sqf
// Remove first 3 elements
_arr deleteRange [0, 3];
```

### Remove all from index
```sqf
// Remove everything from index 5 to end
_arr deleteRange [5, count _arr - 5];
```

## Thread Safety
**Not thread-safe**. Array must belong to the current scheduler.

## See Also
- [deleteAt](deleteAt.md) — remove single element
- [pushBack](pushBack.md) — append element
- [append](append.md) — append multiple
- [resize](resize.md) — change array size