MailboxProcessor.Post<'Msg> Method (F#)
Posts a message to the message queue of the MailboxProcessor, asynchronously.
Namespace/Module Path: Microsoft.FSharp.Control
Assembly: FSharp.Core (in FSharp.Core.dll)
// Signature:
member this.Post : 'Msg -> unit
// Usage:
mailboxProcessor.Post (message)
Parameters
message
Type: 'MsgThe message to post.
Example
The following code example shows how to start a mailbox processor agent and post messages to it.
open System
open Microsoft.FSharp.Control
type Message(id, contents) =
static let mutable count = 0
member this.ID = id
member this.Contents = contents
static member CreateMessage(contents) =
count <- count + 1
Message(count, contents)
let mailbox = new MailboxProcessor<Message>(fun inbox ->
let rec loop count =
async { printfn "Message count = %d. Waiting for next message." count
let! msg = inbox.Receive()
printfn "Message received. ID: %d Contents: %s" msg.ID msg.Contents
return! loop( count + 1) }
loop 0)
mailbox.Start()
mailbox.Post(Message.CreateMessage("ABC"))
mailbox.Post(Message.CreateMessage("XYZ"))
Console.WriteLine("Press any key...")
Console.ReadLine() |> ignore
Following is an example session.
Press any key... Message count = 0. Waiting for next message. Message received. ID: 1 Contents: ABC Message count = 1. Waiting for next message. Message received. ID: 2 Contents: XYZ Message count = 2. Waiting for next message.
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