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Seq.maxBy<'T,'U> Function (F#)

Returns the greatest of all elements of the sequence, compared by using Operators.max on the function result.

Namespace/Module Path: Microsoft.FSharp.Collections.Seq

Assembly: FSharp.Core (in FSharp.Core.dll)

// Signature:
Seq.maxBy : ('T -> 'U) -> seq<'T> -> 'T (requires comparison)

// Usage:
Seq.maxBy projection source

projection

Type: 'T -> 'U

A function to transform items from the input sequence into comparable keys.

source

Type: seq<'T>

The input sequence.

Exception

Condition

ArgumentException

Thrown when the input sequence is empty.

ArgumentNullException

Thrown when the input sequence is null.

The result sequence.

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.

Windows 8, Windows 7, Windows Server 2012, Windows Server 2008 R2

F# Core Library Versions

Supported in: 2.0, 4.0, Portable

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