---
title: isOneway
framework: foundation
role: symbol
role_heading: Instance Method
path: foundation/nsmethodsignature/isoneway
---

# isOneway

Whether the receiver is asynchronous when invoked through distributed objects.

## Declaration

```occ
- (BOOL) isOneway;
```

## Return Value

Return Value true if the receiver is asynchronous when invoked through distributed objects, otherwise false.

## Discussion

Discussion If the method is oneway, the sender of the remote message doesn’t block awaiting a reply.