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# Mach.SendOnceRight

The MachPortRight type used to manage a send-once right.

```
@frozen struct SendOnceRight
```

## Overview

Send-once rights are the most restrictive type of Mach port rights.
They cannot create other rights, and are consumed upon use.

Upon destruction a send-once notification will be sent to the
receiving end.

## Relationships

### Conforms To

[`MachPortRight`](/documentation/System/MachPortRight)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Copyable`](/documentation/Swift/Copyable)

[`Sendable`](/documentation/Swift/Sendable)

---

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