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

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

Returns the length of the sequence

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

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

Syntax

// Signature:
Seq.length : seq<'T> -> int

// Usage:
Seq.length source

Parameters

source Type: seq<'T>

The input sequence.

Exceptions

ExceptionCondition
ArgumentNullExceptionThrown when the input sequence is null.

Return Value

The length of the sequence.

Remarks

This function is named Length in compiled assemblies. If you are accessing the function from a language other than F#, or through reflection, use this name.

Example


    let table1 = seq { for i in 1 ..10 do
                          for j in 1 .. 10 do
                              yield (i, j, i*j)
                     }
    Seq.length table1 |> printfn "Length: %d"

Output

Length: 100

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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