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Seq.exactlyOne<'T> Function (F#)

Den Delimarsky|Last Updated: 7/25/2016
|
1 Contributor

Returns the only element of the sequence.

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

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

Syntax

// Signature:exactlyOne : seq<'T> -> 'T// Usage:Seq.exactlyOne source

Parameters

source Type: seq<'T>

The input sequence.

Exceptions

ExceptionCondition
ArgumentExceptionThrown when the input does not have precisely one element.
ArgumentNullExceptionThrown when the input sequence is null

Return Value

The last element of the sequence.

Remarks

This function is named ExactlyOne in the .NET assembly. If accessing the member from a .NET language other than F#, or through reflection, use this name.

Platforms

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

Collections.Seq Module (F#)

Microsoft.FSharp.Collections Namespace (F#)

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