Simply binding to anything using a VisualElement.schedule extension

Observer.cs

// Usage: schedule.Watch(Func<T> getValue, Action<T> valueWasChanged)
// Eg: visualElement.schedule.Watch(() => myInstance.someProperty, i => visualElement.text = $"Value:{i}");

public class Observer<T>
{
    private readonly Func<T> _getValue;
    private readonly Action<T> _onChange;
    private T _lastValue;

    public Observer(Func<T> getValue, Action<T> onChange)
    {
        _getValue = getValue;
        _onChange = onChange;
        _lastValue = getValue();
    }

    public void Execute()
    {
        var newValue = _getValue();
        if (!EqualityComparer<T>.Default.Equals(newValue, _lastValue))
        {
            _lastValue = newValue;
            _onChange.Invoke(newValue);
        }
    }
}

public static class IVisualElementSchedulerExtensions
{
    public static void Watch<T>(this IVisualElementScheduler scheduler, Func<T> GetValue, Action<T> OnChange)
    {
        scheduler.Execute(new Observer<T>(GetValue, OnChange).Execute).Until(() => false);
    }
}