List.maxBy<'T,'U> Function (F#)
Returns the greatest of all elements of the list, compared by using Operators.max on the function result.
Namespace/Module Path: Microsoft.FSharp.Collections.List
Assembly: FSharp.Core (in FSharp.Core.dll)
// Signature:
List.maxBy : ('T -> 'U) -> 'T list -> 'T (requires comparison)
// Usage:
List.maxBy projection list
projection
Type: 'T -> 'UThe function to transform the list elements into the type to be compared.
list
Type: 'TlistThe input list.
Exception |
Condition |
---|---|
Thrown when the list is empty. |
The maximum element.
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.
The following code shows how to use List.maxBy.
[ -10.0 .. 10.0 ]
|> List.maxBy (fun x -> 1.0 - x * x)
|> printfn "%A"
Output
0.0
Windows 8, Windows 7, Windows Server 2012, Windows Server 2008 R2
F# Core Library Versions
Supported in: 2.0, 4.0, Portable