<Extension>
Public Iterator Function Repeat(Of T)(element As T) As IEnumerable(Of T)
While True
Yield element
End While
End Function
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| ctx.Database.Log = message => Console.WriteLine(message); |
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| <Query Kind="Statements"> | |
| <Reference><RuntimeDirectory>\System.Windows.Forms.dll</Reference> | |
| <NuGetReference>OxyPlot.WindowsForms</NuGetReference> | |
| <Namespace>OxyPlot</Namespace> | |
| <Namespace>OxyPlot.Axes</Namespace> | |
| <Namespace>OxyPlot.Series</Namespace> | |
| </Query> | |
| var pm = new PlotModel | |
| { |
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| Imports System.ComponentModel | |
| Public Class Form1 | |
| Private _model As New Model() | |
| Public Sub New() | |
| InitializeComponent() |
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| void Main() | |
| { | |
| var connection = ConnectionMultiplexer.Connect("192.168.5.40"); | |
| var sx1 = connection.ObservableSubscription("pa"); | |
| using (sx1.Subscribe(_ => Console.WriteLine(_))) Console.ReadLine(); | |
| var sx2 = connection.ObservableList("qa", TimeSpan.FromSeconds(5)); | |
| using (sx2.Subscribe(_ => Console.WriteLine(_))) Console.ReadLine(); | |
別に TaskCompletionSource でハマったわけではないですが、TaskCompletionSource で作成したタスクを Async/Await で待ったときにハマってしまった。
元々、OPC Automation で非同期入出力が、コマンドに対しイベントで完了を通知していますので、TaskCompletionSource を使って Task にする説明を考えていました。
最初に、チョロット書こうとしていたことを事実を捻じ曲げて説明します。(本当は引数等が違います。) OPC Automation では、AsyncRead に対し完了を AsyncReadComplete イベントで通知し、操作のキャンセルも AsyncCancel に対し AsyncCancelComplete で完了を通知しています。
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| public static Class EnumerableEx | |
| { | |
| } |
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| open System.Net | |
| open System.Net.Sockets | |
| type IpMessenger (port: int) = | |
| let client = new UdpClient(port) | |
| let random = new Random(Environment.TickCount) | |
| let nextId = fun () -> random.Next(0, 1000) | |
| let sendBuffer (address: IPAddress, message: Byte[]) = | |
| client.Send(message, message.Length, new IPEndPoint(address, 2425)) |
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