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

Den Delimarsky|Last Updated: 6/8/2016
|
1 Contributor

Returns the length of an array.

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

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

Syntax

// Signature:
Array.length : 'T [] -> int

// Usage:
Array.length array

Parameters

array Type: 'T[]

The input array.

Return Value

Returns the length of the array.

Remarks

You can also use the property Length.

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

The following code example demonstrates how to use Array.length.


    Array.length [| 1 .. 100 |] |> printfn "Length: %d"
    Array.length [| |] |> printfn "Length: %d"
    Array.length [| 1 .. 2 .. 100 |] |> printfn "Length: %d"

Output

Length: 100
Length: 0
Length: 50

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.Array Module (F#)

Microsoft.FSharp.Collections Namespace (F#)

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