Patterns.DefaultValue Active Pattern (F#)
Recognizes expressions that represent invocations of a default constructor of a struct.
Namespace/Module Path: Microsoft.FSharp.Quotations.Patterns
Assembly: FSharp.Core (in FSharp.Core.dll)
( |DefaultValue|_| ) : (input:Expr) -> Type option
The input expression to match against.
The formal return type is
Type option. The option indicates whether the input results in a match. In a pattern matching expression, the input is decomposed, upon a successful match, into a type object that represents the type that is being constructed.
This function is named
DefaultValuePattern in the .NET Framework assembly. If you are accessing the member from a .NET Framework language other than F#, or through reflection, use this name.
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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