Array.sortWith<'T> Function (F#)
Sorts the elements of an array, using the given comparison function as the order, returning a new array.
Namespace/Module Path: Microsoft.FSharp.Collections.Array
Assembly: FSharp.Core (in FSharp.Core.dll)
// Signature:
Array.sortWith : ('T -> 'T -> int) -> 'T [] -> 'T []
// Usage:
Array.sortWith comparer array
Parameters
comparer
Type: 'T -> 'T ->intThe function to compare pairs of array elements.
array
Type: 'T[]The input array.
Return Value
The sorted array.
Remarks
This is not a stable sort, that is, the original order of equal elements might not be preserved. For a stable sort, consider using Seq.sort.
This function is named SortWith 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 the use of Array.sortWith.
open System
let array1 = [| "<>"; "&"; "&&"; "&&&"; "<"; ">"; "|"; "||"; "|||" |]
printfn "Before sorting: "
array1 |> printfn "%A"
let sortFunction (string1:string) (string2:string) =
if (string1.Length > string2.Length) then
1
else if (string1.Length < string2.Length) then
-1
else
String.Compare(string1, string2)
Array.sortWith sortFunction array1
|> printfn "After sorting: \n%A"
Output
Before sorting: [|"<>"; "&"; "&&"; "&&&"; "<"; ">"; "|"; "||"; "|||"|] After sorting: [|"&"; "|"; "<"; ">"; "&&"; "||"; "<>"; "&&&"; "|||"|]
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