---
title: "-=(_:_:)"
framework: tabulardata
role: symbol
role_heading: Operator
path: "tabulardata/columnslice/-=(_:_:)-1n1gh"
---

# -=(_:_:)

Modifies a column slice by subtracting a value from each element.

## Declaration

```swift
static func -= (lhs: inout ColumnSlice<WrappedElement>, rhs: WrappedElement) where WrappedElement : AdditiveArithmetic
```

## Parameters

- `lhs`: A column slice.
- `rhs`: A value of the same type as the column’s elements.

## See Also

### Modifying a Column Slice with a Value

- [+=(_:_:)](tabulardata/columnslice/+=(_:_:)-950qi.md)
- [*=(_:_:)](tabulardata/columnslice/*=(_:_:)-i6qs.md)
- [/=(_:_:)](tabulardata/columnslice/_=(_:_:)-8oi36.md)
- [/=(_:_:)](tabulardata/columnslice/_=(_:_:)-8pl3f.md)