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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

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

Member

Description

new

Creates an instance of the attribute

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

F# Core Library Versions

Supported in: 2.0, 4.0, Portable

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