Export (0) Print
Expand All
Expand Minimize

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

list

Type: 'T list

The input list.

Exception

Condition

ArgumentException

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

Show:
© 2014 Microsoft