---
title: "*=(_:_:)"
framework: swift
role: symbol
role_heading: Operator
path: "swift/duration/*=(_:_:)"
---

# *=(_:_:)

## Declaration

```swift
static func *= <T>(lhs: inout Duration, rhs: T) where T : BinaryInteger
```

## See Also

### Performing calculations on durations

- [*(_:_:)](swift/duration/*(_:_:)-3d469.md)
- [/(_:_:)](swift/duration/_(_:_:)-7fkmh.md)
- [/=(_:_:)](swift/duration/_=(_:_:)-10rgx.md)
- [/=(_:_:)](swift/duration/_=(_:_:)-1qfv3.md)