reactive-vm.rvm.cs

viewmodel StatusViewModel 
{
  // Simple property definition, by default public and defines both get/set
  string Name; 
  
  // Getter only
  string Name get;
  
  // Private field is everything prefixed by '_'
  string _name;
  
  // '=' symbol marks dependant property (all previous rules apply)
  // Right part should always return value
  // 'stream' keyword takes IObservable<T> and returns T, kinda like 'await'
  string FullName = stream Name + " " + stream LastName;
  
  // this is translated to
  this.WhenAnyValue(vm => vm.Name)
      .CombineLatest(this.WhenAnyValue(vm => vm.LastName))
      .BindTo(FullName);
  
  string ComplexValue = {
    var val = stream service.Values;
    throttle 1 second;
    where val > 5;
    var result = selectmany service.GetAsync(val)
    return result;
  }
  
  // this is translated to
  service.Values
         .Throttle(TimeSpan.FromSeconds(1))
         .Where(val => val > 5)
         .SelectMany(val => serviceGetAsync(val))
         .BindTo(vm => vm.ComplexValue);
  
  // Simple command
  command Notify = {
    Debug.WriteLine("Button clicked!");
  }
  
  // Async command allows Task<T> and IObservable<T>
  command<string> RequestAsync = new WebClient("url").DownloadStringAsync();
  
  // Async command result is used like this
  string Content = "Downloaded: " + stream RequestAsync;
  
  // Default constructor definition, assigns 'fullName' to 'FullName' and 'age' to 'Age'
  StatusViewModel(string fullName, string age);
  
  // Manual constructor definition
  StatusViewModel(string fullName, string age) {
    FullName = fullName;
    Age = age;
    
    Debug.WriteLine("StatusViewModel constructor called");
  }
}