Use Descriptive Variables With Whenany

Use descriptive variables in your WhenAny

In situations where you are detecting changes in multiple expressions, ensure you name the variables in the selector

Do

public class MyViewModel : ReactiveObject
{
  public MyViewModel()
  {
    this.WhenAny(
        x => x.SomeProperty.IsEnabled,
        x => x.SomeProperty.IsLoading,
        (isEnabled, isLoading) => isEnabled.Value && isLoading.Value)
        .Subscribe(_ => DoSomething());
  }
  
  // other code here
}

Don't

public class MyViewModel : ReactiveObject
{
  public MyViewModel()
  {
    this.WhenAny(
        x => x.SomeProperty.IsEnabled,
        x => x.SomeProperty.IsLoading,
        (x, y) => x.Value && y.Value)
        .Subscribe(_ => DoSomething());
  }
  
  // other code here
}

Why?

This helps greatly with the readability of complex expressions, particularly when working with boolean values.