---
title: "-(_:_:)"
framework: spatial
role: symbol
role_heading: Operator
path: "spatial/size3dfloat/-(_:_:)"
---

# -(_:_:)

Returns a size that’s the element-wise difference of two sizes.

## Declaration

```swift
static func - (lhs: Size3DFloat, rhs: Size3DFloat) -> Size3DFloat
```

## Parameters

- `lhs`: The first value.
- `rhs`: The second value.