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

  • Article

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

Parameters

  • action
    Type: 'T -> unit

    The function to apply to elements from the input list.

  • list
    Type: 'T list

    The input list.

Remarks

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.

Example

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

Platforms

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

Version Information

F# Core Library Versions

Supported in: 2.0, 4.0, Portable

See Also

Reference

Collections.List Module (F#)

Microsoft.FSharp.Collections Namespace (F#)