Core.DefaultValueAttribute Class (F#)

Adding this attribute to a field declaration means that the field is not initialized. During type checking a constraint is asserted that the field type supports null. If the Check value is false then the constraint is not asserted.

Namespace/Module Path: Microsoft.FSharp.Core

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

[<AttributeUsage(256, AllowMultiple = false)>]
[<Sealed>]
type DefaultValueAttribute =
 class
  new DefaultValueAttribute : bool -> DefaultValueAttribute
  new DefaultValueAttribute : unit -> DefaultValueAttribute
  member this.Check :  bool
 end

Remarks

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

Constructors

Member	Description
new	Creates an instance of the attribute

Instance Members

Member	Description
Check	Indicates if a constraint is asserted that the field type supports 'null'

Platforms

Windows 7, Windows Vista SP2, Windows XP SP3, Windows XP x64 SP2, Windows Server 2008 R2, Windows Server 2008 SP2, Windows Server 2003 SP2

Version Information

F# Runtime

Supported in: 2.0, 4.0

Silverlight

Supported in: 3

See Also

Reference

Microsoft.FSharp.Core Namespace (F#)