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# raise(_:format:arguments:)

Creates and raises an exception with the specified name, reason, and arguments.

```
class func raise(_ name: NSExceptionName, format: String, arguments argList: CVaListPointer)
```

## Parameters

`name`

The name of the exception.

`format`

A human-readable message string (that is, the exception reason) with conversion specifications for the variable arguments in `argList`.

`argList`

Variable information to be inserted into the formatted exception reason (in the manner of `vprintf`).

## Discussion

The user-defined dictionary of the generated object is `nil`.

## See Also

[`+  raise:format:`](/documentation/Foundation/NSException/raise:format:)

A convenience method that creates and raises an exception.


---

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