truedem

// https://www.reddit.com/r/androiddev/comments/ert88w/asking_if_this_is_possible_to_do_with_maps_api/

fun closestDistance(point:LatLng, route:Polyline) : Double {

    var minDist = Double.MAX_VALUE
    for (i in 0 until (route.points?.size ?: 0) - 1) {
        val dist=lineDistance(point,route.points[i],route.points[i+1])
        if (dist<minDist){
            minDist=dist
        }

truedem

// https://stackoverflow.com/questions/57752301/dagger2-10-inject-viewmodel-in-fragment-activity-which-has-run-time-dependenci

class ProductViewModel(
    val product: Product, 
    val resourceProvider: ResourceProvider,
    val appUtils: AppUtils, 
    val alertManager: AlertManager
) {
// ...
}

truedem

List<out T> is like List<? extends T> in Java

List<in T> is like List<? super T> in Java

truedem

// oroginal:
// variable?.let { // doStuff }
// replacement:
  
inline fun <T:Any, R> whenNotNull(input: T?, callback: (T)->R): R? {
    return input?.let(callback)
}

truedem

//    One shot operation that returns a value (ie GET, shared prefs)? Single.
//    One shot operation that returns nothing? (POST) Completable.
//    One shot operation that might return null (ie fetch from a DB)? Maybe.
//    An operation that returns multiple objects over time (ie websockets or a list)? Observable.

//    use Kotlin coroutines? Deferred<T>

truedem

// to avoid this situation: https://kinnrot.github.io/live-data-pitfall-you-should-be-aware-of/
 
fun <T> MutableLiveData<T>.safeSetValue(newValue: T) { if(Thread.currentThread() == Looper.getMainLooper().thread) value = newValue else postValue(newValue) }

truedem

public class TextViewOutline extends AppCompatTextView {

    /*
    Add to attr.xml:
        <declare-styleable name="TextViewOutline">
        <attr name="outlineSize" format="dimension"/>
        <attr name="outlineColor" format="color|reference"/>
        <attr name="android:shadowRadius"/>
        <attr name="android:shadowDx"/>
        <attr name="android:shadowDy"/>

truedem

    @After
    public void release() {
        Espresso.unregisterIdlingResources();
    }
    
    @Test
    public void buttonShouldUpdateText() {
        // may put following 3 lines into @BeforeEach annotaded method as well
        rxEspressoScheduleHandler = new RxEspressoScheduleHandler();
        RxJavaPlugins.setScheduleHandler(rxEspressoScheduleHandler);

truedem

// https://github.com/ReactiveX/RxJava/issues/1323#issuecomment-45149897
// thank you, akarnokd !

public class ThrottleNotFirst {
  public static void main(String[] args) throws Exception {
      for (int firstWait = 0; firstWait < 2; firstWait++) {
          PublishSubject<String> source = PublishSubject.create();

          PublishSubject<Observable<String>> immediates = PublishSubject.create();

truedem

content.postDelayed(new Runnable() {
  @Override
  public void run() {
    if ((Build.VERSION.SDK_INT >= 17 && LWQSettingsActivity.this.isDestroyed()) || LWQSettingsActivity.this.isFinishing()) {
      return;
    }
    requestNewInterstitial();
  }
}, 1000);