Core.OptionalArgumentAttribute Class (F#)
This attribute is added automatically for all optional arguments.
Namespace/Module Path: Microsoft.FSharp.Core
Assembly: FSharp.Core (in FSharp.Core.dll)
[<AttributeUsage(2048, AllowMultiple = false)>]
[<Sealed>]
type OptionalArgumentAttribute =
class
new OptionalArgumentAttribute : unit -> OptionalArgumentAttribute
end
Remarks
You can apply this attribute to a parameter that is an option type to make it an optional parameter. This is the equivalent of applying a ? to the parameter name in the parameter list. Optional parameters should not be followed by non-optional parameters in the parameter list.
You can also use the short form of the name, OptionalArgument.
Constructors
Member |
Description |
|---|---|
Creates an instance of the attribute |
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