ZakTaccardi

/**
 * Handles checking when data should be considered stale, and invokes a function to refresh data.
 *
 */
@DataScope class StaleDataObservatory(

        /**
         * Duration the data is considered "fresh"
         */
        syncInterval: Long,

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

fun <T, R> Observable<T>.scanMap(func2: (T?, T) -> R): Observable<R> {
    return this.startWith(null as T?) //emit a null value first, otherwise the .buffer() below won't emit at first (needs 2 emissions to emit)
            .buffer(2, 1) //buffer the previous and current emission
            .filter { it.size >= 2 }
            .map { func2.invoke(it[0], it[1]) }
}

fun <T, R> Observable<T>.scanMap(initialValue: T, func2: (T, T) -> R): Observable<R> {
    return this.startWith(initialValue) //use initially provided value instead of null
            .buffer(2, 1)

ZakTaccardi

    @Test
    fun testClear() {
        clickNumber(1)
        clickNumber(2)
        clickNumber(3)
        state.assertValue(123)

        longPressClear()
        state.assertValue(0)
    }

ZakTaccardi

/**
 * The user interface for dealing cards.
 *
 * @see DealCardsActivity
 */
interface DealCardsUi : StateRenderer<DealCardsUi.State> {

    val state: State

    override fun render(state: State)

ZakTaccardi

import android.animation.Animator
import android.animation.AnimatorListenerAdapter
import android.content.Context
import android.view.View
import android.view.ViewGroup

/**
 * Animates a view between its states.
 *
 * Currently only supports crossfading.

ZakTaccardi

class TemporalCoupling {

    fun incorrectUsageOfBadApi() {
        val badApi: BadApi = BadApi()

        badApi.username = "Zak"
        badApi.password = "temporalCouplingIsBad_123"
        badApi.login() //throws an NullPointerException
    }

ZakTaccardi

import org.junit.Test;

import java.util.function.Consumer;

/**
 * Note: no actual assertions are done here.
 */
public class FizzBuzzTest {
    static void defaultPrint(BaseFizzBuzz base) {

ZakTaccardi

package com.example.taccardi.zak;

import android.support.annotation.NonNull;
import io.reactivex.Observable;

/**
 * Use this class to lock (prevent charges to it) or unlock (allow charges) a card.
 */
interface CardLockRepository {

ZakTaccardi

class UserRepository{
  // note: hot observables that do not replay missed events
  fun logins(): Observable<User> 
  fun logouts(): Observable<Unit>  
}

/**
 * An abstract user with two implementations: 
 * "LoggedIn" and "Logged out"
 */