Array.length<'T> Function (F#)
Returns the length of an array.
Namespace/Module Path: Microsoft.FSharp.Collections.Array
Assembly: FSharp.Core (in FSharp.Core.dll)
// Signature:
Array.length : 'T [] -> int
// Usage:
Array.length array
Parameters
array
Type: 'T[]The input array.
Return Value
The length of the array.
Remarks
You can also use 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