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# value(forKey:)

Returns the value for the property identified by a given key.

```
func value(forKey key: String) -> Any?
```

## Parameters

`key`

The name of one of the receiver’s properties.

## Return Value

The value for the property identified by `key`.

## Discussion

The search pattern that `valueForKey:` uses to find the correct value to return is described in [Accessor Search Patterns](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/KeyValueCoding/SearchImplementation.html#//apple_ref/doc/uid/20000955) in [Key-Value Coding Programming Guide](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/KeyValueCoding/index.html#//apple_ref/doc/uid/10000107i).

## See Also

  [Key-Value Coding Programming Guide](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/KeyValueCoding/index.html#//apple_ref/doc/uid/10000107i)


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