jpetitto

//region model

sealed interface NotesUiModel : UiModel {
  object Loading : NotesUiModel
  
  data class Data(
    val notes: List<Note>,
    val events: EventHandler<Event>
  ) : NotesUiModel {
    data class Note(

jpetitto

public class MainActivity extends AppCompatActivity {
    List<Adapter.ViewHolder> listeners = new ArrayList<>();
    private boolean visible = true;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

jpetitto

recyclerView.addItemDecoration(new SpacingItemDecoration(context, 16));

jpetitto

public class SpacingItemDecoration extends RecyclerView.ItemDecoration {
  private int spacing;

  public SpacingItemDecoration(Context context, int padding) {
    DisplayMetrics metrics = context.getResources().getDisplayMetrics();
    spacing = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, padding, metrics);
  }

  @Override
  public final void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {

jpetitto

<android.support.v7.widget.RecyclerView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="16dp"
    android:clipToPadding="false" />

jpetitto

Observable.just(1, 2, 3, 4, 5)
        .groupBy(i -> i % 2 == 0 ? "even" : "odd")
        .subscribe(obs -> {
            if (obs.getKey().equals("even")) {
                obs.subscribe(i -> System.out.println("even: " + i));
            } else {
                obs.subscribe(i -> System.out.println("odd: " + i));
            }
        });

jpetitto

BehaviorSubject<Integer> timerSubject = BehaviorSubject.create(1);

timerSubject
    .switchMap(interval -> Observable.timer(interval, TimeUnit.SECONDS, Schedulers.newThread()))
    .flatMap(i -> Observable.just(randomInt()))
    .doOnNext(timerSubject::onNext)
    .subscribe(System.out::println);

jpetitto

List<Item> allBucket = ...
List<Item> genderBucket = ...
List<Item> sizeBucket = ...
List<Item> colorBucket = ...

List<Item> recommendations = new ArrayList<>();
picker(recommendations, limit, colorBucket, sizeBucket, genderBucket, allBucket);

private <T> int picker(List<T> src, List<T> dst, int limit) {
  Iterator<T> iterator = src.iterator();

jpetitto

private <T> int picker(List<T> src, List<T> dst, int limit) {
  Iterator<T> iterator = src.iterator();
  while (iterator.hasNext() && limit > 0) {
    dst.add(iterator.next());
    limit--;
  }
  return limit;
}

jpetitto

for (int i = 0, remaining = 5; i < colorBucket.size() && remaining > 0; i++, remaining--) {
  ...
}