public PointsPresenter(IReadOnlyReactiveProperty <int> pointsAmount)
{
// Update Points Amount Label Gradually
PointsAmountChanged = pointsAmount
.Skip(1)
.Scan(new { Previous = 0, Current = pointsAmount.Value },
(accumulator, newVal) => new { Previous = accumulator.Current, Current = newVal })
.Select(pair =>
{
var direction = pair.Current > pair.Previous ? 1 : -1;
return(Observable.Interval(TimeSpan.FromMilliseconds(30))
.Scan(pair.Previous, (accumulator, _) => accumulator + direction)
.TakeWhile(val => val != pair.Current + direction));
})
.Switch()
.StartWith(pointsAmount.Value);
}
public static IObservable <T> SkipLatestValueOnSubscribe <T>(this IReadOnlyReactiveProperty <T> source)
{
return(source.HasValue ? source.Skip(1) : source);
}
public static UniRx.IObservable <T> SkipLatestValueOnSubscribe <T>(this IReadOnlyReactiveProperty <T> source)
{
return((!source.HasValue) ? source : source.Skip(1));
}