by May 6, 2012on
A few days ago I wondered how to implement the Singleton pattern in F#. After a few failed attempts I came up with the following:
// Singleton type with a private parameterless constructor type MySingleton private() = // other bindings // private static instance of the MySingleton type static let mutable instance = lazy(MySingleton()) // public getter property static member Instance with get() = instance // other members
The point I had the most trouble with was the correct definition of a static
let binding. So in order to make a
let binding static in a type definition just put a
static in front of it - that’s all.