leonardoaramaki

/**
 * Wraps an [onClick] lambda with another one that supports debouncing. The default deboucing time
 * is 1000ms.
 *
 * @return debounced onClick
 */
@Composable
inline fun debounced(crossinline onClick: () -> Unit, debounceTime: Long = 1000L): () -> Unit {
    var lastTimeClicked by remember { mutableStateOf(0L) }
    val onClickLambda: () -> Unit = {

leonardoaramaki

private var verticalScrollOffset = AtomicInteger(0)

recyclerView.addOnLayoutChangeListener { _, _, _, _, bottom, _, _, _, oldBottom ->
    val y = oldBottom - bottom
    if (y.absoluteValue > 0) {
        recyclerView.post {
            if (y > 0 || verticalScrollOffset.get().absoluteValue >= y.absoluteValue) {
                recyclerView.scrollBy(0, y)
            } else {
                recyclerView.scrollBy(0, verticalScrollOffset.get())

leonardoaramaki

Thread.setDefaultUncaughtExceptionHandler ({ t, e -> //… })

leonardoaramaki

// Java

@FunctionaInterface
public interface UncaughtExceptionHandler {
	void uncaughtException(Thread t, Throwable e);
}

leonardoaramaki

fun fail(message: String): Nothing {
   val throwable = Throwable(message)
   Thread.setDefaultUncaughtExceptionHandler { t, e -> System.err.println(e.message) }
   throw throwable
}
// ...
val user: User = getUser() ?: fail("User not found!")
println("Hello, ${user.name}")

leonardoaramaki

fun fail(message: String): Nothing {
   throw IllegalStateException(message)
}
// ...
val user: User = getUser() ?: fail("User not found!")
println("Hello, ${user.name}")

leonardoaramaki

fun fail(message: String) {
   throw IllegalStateException(message)
}
 
// Is the same as:
 
fun fail(message: String): Unit {
   throw IllegalStateException(message)
}

leonardoaramaki

fun fail(message: String) {
   throw IllegalStateException(message)
}
….
val user: User = getUser() ?: fail("User not found!")
println("Hello, ${user.name}")

leonardoaramaki

val user: User = getUser() ?: throw IllegalStateException("User not found!")
println("Hello, ${user.name}")

leonardoaramaki

fun getUser(): User? {
   // ...
}
 
val user: User? = getUser()
if (user != null) {
   println("Hello, ${user.name}")
} else {
   throw IllegalStateException("User not found!")
}