jartur

module Main where

import Data.Sequence

--     *
-- *ww**w*
-- **w****
-- *******
sq = fromList [3,2,1,3,4,2,3]

jartur

class MyActor(ref: ActorRef) extends Actor {
  def receive: Receive = {
    case Bifurcate =>
    context.actorOf(Props[MyActor](new MyActor(sender)))
  }
}

jartur

==> Configuration
HOMEBREW_VERSION: 0.9.5
HEAD: 80e6a9cbed41cfe4e53bf0bf8711d92b2eb8f090
CPU: quad-core 64-bit sandybridge
OS X: 10.9.1-x86_64
Xcode: 5.0.2
CLT: 5.0.1.0.1.1382131676
X11: 2.7.5 => /opt/X11
==> ENV
HOMEBREW_CC: clang

jartur

AtomicReference<Map> amap;

readOnlyMethod() {
   // get immutable map reference
   Map m = amap.get();
   m.get(key);
   ...
   m.get(key2);
   ...
}

jartur

Optional<User> user = users.get(id);
if(user.isPresent()) {
    Optional<Account> account = accounts.get(user.get());
    if(account.isPresent()) {
        Optional<CreditCard> card = cards.get(user.get(), account.get());
        if(card.isPresent()) {
            card.get().destroy();
        }
    }
}

jartur

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

jartur

public class Y<T> implements Function<Function<Function<T, T>, Function<T, T>>, Function<T, T>> {

    @FunctionalInterface
    private interface FuncToFunc<F> extends Function<FuncToFunc<F>, F> {}

    @Override
    public Function<T, T> apply(Function<Function<T, T>, Function<T, T>> r) {
        final FuncToFunc<Function<T, T>> funcToFunc = f -> f.apply(f);
        return funcToFunc.apply(f -> r.apply(x -> f.apply(f).apply(x)));
    }