Export (0) Print
Expand All
Expand Minimize

List.iter<'T> Function (F#)

Applies the given function to each element of the collection.

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

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

// Signature:
List.iter : ('T -> unit) -> 'T list -> unit

// Usage:
List.iter action list


Type: 'T -> unit

The function to apply to elements from the input list.


Type: 'T list

The input list.

This function is named Iterate in compiled assemblies. If you are accessing the function from a language other than F#, or through reflection, use this name.

The following example demonstrates the use of List.iter.

let data = ["Cats";"Dogs";"Mice";"Elephants"]
data |> List.iter (fun x -> printfn "item: %s" x)
item: Cats
item: Dogs
item: Mice
item: Elephants

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

F# Core Library Versions

Supported in: 2.0, 4.0, Portable

© 2015 Microsoft