---
title: DispatchTimeInterval.never
framework: dispatch
role: symbol
role_heading: Case
path: dispatch/dispatchtimeinterval/never
---

# DispatchTimeInterval.never

No interval.

## Declaration

```swift
case never
```

## Discussion

Discussion Use this case to specify a time interval that never occurs. For example, specify this value for a timer’s repeat interval to prevent a timer from repeating.

## See Also

### Enumeration Cases

- [DispatchTimeInterval.seconds(_:)](dispatch/dispatchtimeinterval/seconds(_:).md)
- [DispatchTimeInterval.milliseconds(_:)](dispatch/dispatchtimeinterval/milliseconds(_:).md)
- [DispatchTimeInterval.microseconds(_:)](dispatch/dispatchtimeinterval/microseconds(_:).md)
- [DispatchTimeInterval.nanoseconds(_:)](dispatch/dispatchtimeinterval/nanoseconds(_:).md)