Structural Equality in F#

Question

I have a record type that includes a function:

{foo : int; bar : int -> int}

I want this type to have structural equality. Is there some

Answer 1

To answer more specifically your original question, you can create a custom type whose comparison between instances is always true:

[]
type StructurallyNull<'T> =
    { v: 'T } 

    override x.Equals(yobj) =
        match yobj with
        | :? StructurallyNull<'T> -> true
        | _ -> false

    override x.GetHashCode() = 0

You can then use it this way:

type MyType = { 
    foo: int; 
    bar: StructurallyNull int> 
}