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List.minBy<'T,'U> Function (F#)

Returns the lowest of all elements of the list, compared by using Operators.min on the function result.

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

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

// Signature:
List.minBy : ('T -> 'U) -> 'T list -> 'T (requires comparison)

// Usage:
List.minBy projection list

projection

Type: 'T -> 'U

The function to transform list elements into the type to be compared.

list

Type: 'T list

The input list.

Exception

Condition

ArgumentException

Thrown when the list is empty.

The minimum value.

This function is named MinBy 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.minBy.


[ -10.0 .. 10.0 ]
|> List.minBy (fun x -> x * x - 1.0)
|> printfn "%A"


Output

0.0

Windows 7, Windows Vista SP2, Windows XP SP3, Windows XP x64 SP2, Windows Server 2008 R2, Windows Server 2008 SP2, Windows Server 2003 SP2

F# Runtime

Supported in: 2.0, 4.0

Silverlight

Supported in: 3

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