gtomek

const val ID = "id"

class MyActivity : Activity() {

    private val id1 by extra<String>(ID) // String?
    private val id2 by extraNotNull<String>(ID) // String

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        requireNotNull(id1, id2)

gtomek

inline fun <reified T: Any> Fragment.extra(key: String, default: T? = null) = lazy {
    val value = arguments?.get(key)
    if (value is T) value else default
}
inline fun <reified T: Any> Fragment.extraNotNull(key: String, default: T? = null) = lazy {
    val value = arguments?.get(key)
    requireNotNull(if (value is T) value else default) { key }
}

gtomek

inline fun <reified T: Any> Activity.extra(key: String, default: T? = null) = lazy {
    val value = intent?.extras?.get(key)
    if (value is T) value else default
}
inline fun <reified T: Any> Activity.extraNotNull(key: String, default: T? = null) = lazy {
    val value = intent?.extras?.get(key)
    requireNotNull(if (value is T) value else default) { key }
}

gtomek

private class HttpInterceptor implements Interceptor {

	@Override
	public Response intercept(Chain chain) throws IOException {
		Request request = chain.request();

		//Build new request
		Request.Builder builder = request.newBuilder();
		builder.header("Accept", "application/json"); //if necessary, say to consume JSON
		

gtomek

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class JavaMD5 {

    public static void main(String[] args) {
        String passwordToHash = "MyPassword123";
        String generatedPassword = null;
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");

gtomek

@Test
public void switchMap() throws Exception {
    final List<String> items = Lists.newArrayList("a", "b", "c", "d", "e", "f");

    final TestScheduler scheduler = new TestScheduler();

    Observable.from(items)
            .concatMap( s -> {
                final int delay = new Random().nextInt(10);
                return Observable.just(s + "x")

gtomek

@Test
public void switchMap() throws Exception {
    final List<String> items = Lists.newArrayList("a", "b", "c", "d", "e", "f");

    final TestScheduler scheduler = new TestScheduler();

    Observable.from(items)
            .switchMap( s -> {
                final int delay = new Random().nextInt(10);
                return Observable.just(s + "x")

gtomek

@file:Suppress("NOTHING_TO_INLINE")

import android.util.Log
import io.reactivex.*

inline fun <reified T> printEvent(tag: String, success: T?, error: Throwable?) =
        when {
            success == null && error == null -> Log.d(tag, "Complete") /* Only with Maybe */
            success != null -> Log.d(tag, "Success $success")
            error != null -> Log.d(tag, "Error $error")

gtomek

/**
 * Timber log tree for production.
 */
public class CrashReportingTree extends Timber.Tree{

  @Override protected void log(int priority, String tag, String message, Throwable throwable) {
    switch (priority) {
      case Log.VERBOSE:
      case Log.DEBUG:
      case Log.INFO:

gtomek

import android.content.SharedPreferences;

/**
 * Stores {@link String} value in {@link SharedPreferences}.
 */
public class StringPreference {
	private final SharedPreferences mPreferences;
	private final String mKey;
	private final String mDefaultValue;