ZakTaccardi

// generates callback and method to handle that callback for better Java interop
annotation class JvmCallback

@JvmCallback
sealed class Result {

  data class Success(val successId: String) : Result()
  data class Error(val exception: Exception) : Result()

  // would be automatically generated because of JvmCallback

ZakTaccardi

@file:Suppress("unused", "FunctionName", "IllegalIdentifier")

import android.annotation.SuppressLint
import android.app.Activity
import android.content.Context
import android.content.Intent
import android.os.Bundle

/**
 * The best way to launch yourself an activity. Your implementation should enable the following api:

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"
 */

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

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

private class BetterApi {

    fun login(credentials: Credentials): LoginResponse {
        //login...
        TODO()
    }


    class LoginResponse private constructor(
            val user: User?,

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class TemporalCoupling {

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

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

ZakTaccardi

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

    val state: State

    override fun render(state: State)

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

        longPressClear()
        state.assertValue(0)
    }

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.