ZakTaccardi

the below is command line output generated from the (further below) main method

Factorial of '31' is '738197504'
Factorial of '10' is '3628800'
Factorial of '5' is '120'
Factorial of '4' is '24'
Factorial of '3' is '6'
Factorial of '2' is '2'
Factorial of '1' is '1'
Factorial of '0' is '1'

ZakTaccardi

@Override
protected AsyncTaskResult<String> doInBackground(User... users) {
int userCount = users.length;
if(apiService == null) {  // Only do this once
    UserApi.Builder builder = new UserApi.Builder(AndroidHttp.newCompatibleTransport(),
            new AndroidJsonFactory(), null)
            // options for running against local devappserver
            .setRootUrl("http://" + ServerUtil.getHost() + ":8080/_ah/api/");
    //turn off compression when running against local devappserver
    Utility.compressTrafficIfNecessary(builder);

ZakTaccardi

public BaseButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        
        TypedArray a = context.getTheme().obtainStyledAttributes(
                attrs,
                R.styleable.MaterialButton,
                0, 0);

        try {
          colorButtonNormal = a.getInteger(R.styleable.MaterialButton_mbColorButtonNormal, Color.CYAN);

ZakTaccardi

public class HomePresenter extends BasePresenter<HomeView> {
    ArticleRepo articleRepo;

    @Inject
    public HomePresenter(ArticleRepo articleRepo) {
        this.articleRepo = articleRepo;
    }

    @Override
    public void onCreate(@Nullable PresenterBundle bundle) {

ZakTaccardi

List<Integer> coolList = new ArrayList<Integer>();
    coolList.add(1);
    coolList.add(2);
    coolList.add(3);

    Observable.from(coolList).map(new Func1<Integer, Long>() {
        @Override
        public Long call(Integer integer) {
            //runs on the IO background thread because we specify `Schedulers.io()`
            return integer * 10000000000L;

ZakTaccardi

//append code below to existing build.gradle

def appModuleRootFolder = '.'
def srcDir = 'src'
def googleServicesJson = 'google-services.json'

task switchToDebug(type: Copy) {
    def buildType = 'debug'
    description = 'Switches to DEBUG google-services.json'
    from "${srcDir}/${buildType}"

ZakTaccardi

public void elementClicked(int position){
  if (view != null){
    final int word = view.getWordByPosition(int position)
    view.doAnimationStuff();
    view.launchActivityWithWord(word);
  }
}

//because there are no android dependencies here, it becomes easy to implement Mockito style behavioral testing.

ZakTaccardi

/**
 * A repository to store someone's favorite color.
 */
public interface FavoriteColorRepo {

    /**
     * Loads the user's favorite color.
     * @return ex- "blue"
     */
    public Observable<String> getFavoriteColor();

ZakTaccardi

/**
 * A controller that loads a shopping cart (think online shopping).
 */
public class CartControllerImpl implements CartController {

    final CartModel model;
    final TaxModel taxModel;
    final CurrencyUnit currencyUnit;
    final MoneyFormatter moneyFormatter;
    final RxBus rxBus;

ZakTaccardi

/**
 * Handles getting a user.
 */
public interface UserModel {
   /**
     * @return the currently logged in user, or null if the user is not logged in
     */
    Single<User> getUser();
}