# detector Field
Private delegate function that detects if a setting with a given `key` exists. Returns true if the setting exists, false if not.
## Definition
**Namespace:** CapyKit.Helpers
**Assembly:** CapyKit (in CapyKit.dll) Version: 1.0.2
**C#**
``` C#
private static Func detector
```
**F#**
``` F#
static val mutable private detector: Func
```
#### Field Value
Func(String, Boolean)
## See Also
#### Reference
SettingsHelper Class
CapyKit.Helpers Namespace