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

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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)

Parameters

  • head
    Type: 'T

    A new head value for the list.

  • tail
    Type: 'T list

    The existing list.

Return Value

The list with head appended to the front of tail.

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

Collections.List<'T> Union (F#)

Microsoft.FSharp.Collections Namespace (F#)