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List.head<'T> Function (F#)

Returns the first element of the list.

Namespace/Module Path: Microsoft.FSharp.Collections.List

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

// Signature:
List.head : 'T list -> 'T

// Usage:
List.head list


Type: 'T list

The input list.




Thrown when the list is empty.

The first element of the list.

Raises ArgumentException if list is empty

This function is named Head in compiled assemblies. If you are accessing the function from a 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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