Array.maxBy<'T,'U> Function (F#)
Returns the greatest of all elements of the array, compared by using Operators.max on the function result.
Namespace/Module Path: Microsoft.FSharp.Collections.Array
Assembly: FSharp.Core (in FSharp.Core.dll)
Syntax
// Signature:
Array.maxBy : ('T -> 'U) -> 'T [] -> 'T (requires comparison)
// Usage:
Array.maxBy projection array
Parameters
projection Type: 'T -> 'U
The function to transform the elements into a type supporting comparison.
array Type: 'T[]
The input array.
Return Value
Returns the maximum element.
Remarks
This function is named MaxBy
in compiled assemblies. If you are accessing the function from a language other than F#, or through reflection, use this name.
Ties are resolved by returning the element with the lowest ordinal.
Example
The following code example demonstrates the use of Array.maxBy
.
[| -10.0 .. 10.0 |]
|> Array.maxBy (fun x -> 1.0 - x * x)
|> printfn "%A"
Output
0.0
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