How to define and use static variables in F# class

Question

Is there a way to have a mutable static variable in F# class that is identical to a static variable in C# class ?

Answer 1

This isn't really reccomended, but if you must do it:

1. Use an explicit class constructor (Cannot use type Foo(args) = syntax)
2. Set the field to be static, mutable
3. Add the [] attribute

 

type Foo =

    new() = { }

    [<DefaultValue>]
    static val mutable m_field : int

Foo.m_field <- 1

printfn "Foo.m_field = %d" Foo.m_field