Patterns.NewDelegate Active Pattern (F#)

  • Article

Recognizes expressions that represent the construction of delegate values.

Namespace/Module Path: Microsoft.FSharp.Quotations.Patterns

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

// Signature:
( |NewDelegate|_| ) : (input:Expr) -> (Type * Var list * Expr) option

Parameters

  • input
    Type: Expr

    The input expression to match against.

Return Value

The formal return type is (Type * Var list * Expr) option. The option indicates whether the input results in a match. In a pattern matching expression, the input expression is decomposed, upon a successful match, into a tuple that has three elements. The first element is a Type object that represents the delegate type. The second element is a list that represents delegate arguments as Var objects. The last element is an expression that represents the invocation of the delegate.

Remarks

This function is named NewDelegatePattern 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.

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

Quotations.Patterns Module (F#)

Microsoft.FSharp.Quotations Namespace (F#)