ionoy

TextBox {
  #Watermark(bindingPath: "Xaml", watermarkText: "Insert XAML here")
}

mixin Watermark(bindingPath, watermarkText) for TextBox {
  Style: combine Style {
    TargetType: TextBox
    Triggers: [
      DataTrigger {
        Binding: bind $bindingPath convert (string str) => string.IsNullOrEmpty(str)

ionoy

alias MyTextBox(text) {
  TextBox { 
    
  }
}

Window "Ammy.Test.Workbench.MainWindow" {
  @MyTextBox("2") {
    PreviewTextInput: "NumberValidationTextBox" 
    Text: bind CustomWidth

ionoy

mixin Centered() : FrameworkElement {
    HorizontalAlignment: Center
}
mixin Header() {
    TextBlock { FontSize: 16 }
}

TextBlock {
    @Centered()

ionoy

map syntax ShowSyntax.Top -> Top {
  | WithoutNode -> TopWithoutNode {
    Usings -> Usings;
    Templates -> Templates;
  }
  | WithNode -> TopWithNode {
    Usings -> Usings;
    Node -> TopNode;
    Templates -> Templates;

ionoy

mutable adders;
c.Scope.FindMany(s => true, ref adders);
              
foreach (adder in adders) {
  def parms = adder.ParameterScope
                   .GetSymbols()
                   .OfType.[FormalParameterSymbol]()
                   .ToArray();
  
  when (parms.Length != 1) continue;

ionoy

syntax Expr
{
  | MemberRef       = Key=QualifiedReference
  | ArrayRef        = Key=QualifiedReference "[" Expr "]"
  | MethodCall      = Key=QualifiedReference "(" (Argument; "," sm)* ")"
  | Braces          = "(" Expr ")"
  | Complex = (MethodCall | MemberRef | ArrayRef | Braces) "." Expr
}

ionoy

namespace Nitra.Visualizer.ViewModels
{
  public class AstNodeViewModel : ReactiveObject
  {
    readonly ObjectDescriptor _objectDescriptor;
    readonly NitraClient _client;

    [Reactive]
    public bool                           NeedLoadContent { get; private set; }
    public ReactiveList<AstNodeViewModel> Items           { get; set; }

ionoy

Observable.Interval(TimeSpan.FromSeconds(2))
          .Delay(TimeSpan.FromSeconds(1))
          .ObserveOnDispatcher()
          .Subscribe(_ => ((Storyboard)Resources["FadeIn"]).Begin());

Observable.Interval(TimeSpan.FromSeconds(2))
          .ObserveOnDispatcher()
          .Subscribe(_ => ((Storyboard)Resources["FadeOut"]).Begin());

ionoy

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApplication1"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
  <Window.Resources>
    <Storyboard x:Key="FadeIn" TargetName="TestButton">

ionoy

allMessages.GroupBy(msg => msg.Type)
           .Select(g => g.Throttle(TimeSpan.FromSeconds(0.5)) // Ждём паузы между сообщениями
                         .Select(msg => HandleMessage(msg)) // HandleMessage возвращает Task<Result>
                         .Switch() // Если придёт новое сообщение этого типа, то старый ответ будет игнорирован
                         .SelectMany(res => SendResponse(res)))
           .Subscribe()