How I learned to love the struct and stop worrying (part I)...

NoBoxStruct.fs

/// Equatable operators - avoid boxing operands when comparing structs.
/// Source: https://github.com/dotnet/fsharp/issues/526#issuecomment-119755563
module EquatableOperators =
    let inline eq<'a when 'a :> System.IEquatable<'a>> (x:'a) (y:'a) = x.Equals y
    let inline (==) x y = eq x y
    let inline (!=) x y = not (eq x y)

/// We get a fair warning that it's odd that we impl. custom equality
/// when we deny the equality operator.
[<Struct; NoEquality; NoComparison>]
type BoxAversePoint = 
    { X: int
      Y: int }
      
    interface IEquatable<BoxAversePoint> with
        member x.Equals y =
            x.X = y.X &&
            x.Y = y.Y

let a = { X = 1; Y = 2 } 
let b = a
let c = { X = -1; Y = -2 }

// Do not (and now cannot - due to NoEquality)
//do a = b |> ignore // boxes operands, structs allocate memory
//do a = c |> ignore // boxes operands, structs allocate memory

open EquatableOperators

// Do
do a == b |> ignore // no boxing
do a == c |> ignore // no boxing