Table of contents
Collapse the table of content
Expand the table of content

DerivedPatterns.Applications Active Pattern (F#)

Den Delimarsky|Last Updated: 8/18/2017
1 Contributor

Recognizes expressions that represent the application of a (possibly curried or tupled) first-class function value

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

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


// Signature:
( |Applications|_| ) : (input:Expr) -> (Expr * Expr list list) option


input Type: Expr

The input expression to match against.

Return Value

The formal return value is (Expr * Expr list list) 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 tuple of two elements. The first element is an expression that represents the function. The second element is a list of lists of expressions that represent the curried and tuple arguments of the function.


This function is named ApplicationsPattern 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

Version Information

F# Core Library Versions

Supported in: 2.0, 4.0, Portable

See Also

Quotations.DerivedPatterns Module (F#)

Microsoft.FSharp.Quotations Namespace (F#)

© 2020 Microsoft