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


Supported in: 3

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