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List.Cons<'T> Method (F#)

List.Cons<'T> Method (F#)

Returns a list with head as its first element and tail as its subsequent elements.

Namespace/Module Path: Microsoft.FSharp.Collections

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

// Signature:
static member List.Cons : 'T * 'T list -> 'T list

// Usage:
List.Cons (head, tail)


Type: 'T

A new head value for the list.


Type: 'T list

The existing list.

The list with head appended to the front of tail.

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

F# Runtime

Supported in: 2.0, 4.0


Supported in: 3

Community Additions

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