# 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