Array.isEmpty<'T> Function (F#)
Tests whether an array is empty.
Namespace/Module Path: Microsoft.FSharp.Collections.Array
Assembly: FSharp.Core (in FSharp.Core.dll)
// Signature:
Array.isEmpty : 'T [] -> bool
// Usage:
Array.isEmpty array
Parameters
array
Type: 'T[]The input array.
Return Value
true if the array is empty. Otherwise, returns false.
Remarks
This function is named IsEmpty 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 shows how to use Array.isEmpty.
let printArray array1 =
if (Array.isEmpty array1) then
printfn "There are no elements in this array."
else
printfn "This array contains the following elements:"
Array.iter (fun elem -> printf "%A " elem) array1
printfn ""
printArray [| "test1"; "test2" |]
printArray [| |]
Output
This array contains the following elements: "test1" "test2" There are no elements in this array.
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