Core.NoEqualityAttribute Class (F#)

Adding this attribute to a type indicates it is a type where equality is an abnormal operation. This means that the type does not satisfy the F# equality constraint. Within the bounds of the F# type system, this helps ensure that the F# generic equality function is not instantiated directly at this type. The attribute and checking does not constrain the use of comparison with base or child types of this type.

Namespace/Module Path: Microsoft.FSharp.Core

Assembly: FSharp.Core (in FSharp.Core.dll)

[<AttributeUsage(AttributeTargets.Class ||| AttributeTargets.Interface ||| AttributeTargets.Delegate ||| AttributeTargets.Struct ||| AttributeTargets.Enum, AllowMultiple = false)>]
[<Sealed>]
type NoEqualityAttribute =
 class
  new NoEqualityAttribute : unit -> NoEqualityAttribute
 end

Remarks

You can also use the short form of the name, NoEquality.

Constructors

Platforms

Windows 8, Windows 7, Windows Server 2012, Windows Server 2008 R2

Version Information

F# Core Library Versions

Supported in: 2.0, 4.0, Portable

See Also

Reference

Microsoft.FSharp.Core Namespace (F#)