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String.iter Function (F#)

Applies a specified function to each character in a string.

Namespace/Module Path: Microsoft.FSharp.Core.String

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

// Signature:
String.iter : (char -> unit) -> string -> unit

// Usage:
String.iter action str

action

Type: char -> unit

The function to be applied to each character of the string.

str

Type: string

The input string.

Exception

Condition

ArgumentNullException

Thrown when the input string is null.

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.

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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