garudareiga

public abstract class CaffeineBeverage {
  void prepareRecipe() {
    boilWater();
    brew();
    pourInCup();
    if (customerWantsCondiments())
      addCondiments();
  }
  
  abstract void brew();

garudareiga

public interface Subject {
    public void registerObserver(Observer o);
    public void removeObserver(Observer o);
    public void notifyObservers();
}

public interface Observer {
    public void update(float temp, float humidity, float pressure);
}

garudareiga

public interface FlyBehavior {
    public void fly();
}

public interface QuackBehavior {
    public void quack();
}

public class FlyWithWings implements FlyBehavior {
    public void fly() { System.out.println("flying!"); }

garudareiga

public class Singleton {
    private Singleton() {}

    private static class SingletonHolder {
        private static final Singleton uniqueInstance = new Singleton();
    }

    public static Singleton getInstance() {
        return SingletonHolder.uniqueInstance;
    }

garudareiga

// ingredients: dough, sauce
public interface Dough {};
public interface Cheese {};
public interface Pepperoni {};

public class ThinCrustDough implements Dough {
    public String toString() { return "This Crust Dough"; }
}

public class ParmesanCheese implements Cheese {

garudareiga

public class Switch {
    private Engine engine;
    private boolean on;
    
    public Switch(Engine engine) {
        this.engine = engine;
        this.on = false;
    }
    
    public boolean switchOn() {

garudareiga

create table countries (country_code char(2) primary key, country name text unique);

garudareiga

L1 cache reference                  0.5 ns
Branch mispredict                   5 ns
L2 cache reference                  7 ns
Mutex lock/unlock                   25 ns
Main memory reference               100 ns
Compress 1K bytes with Zippy        3,000 ns
Send 2K bytes over 1 Gbps network   20,000 ns
Read 1 MB sequentially from memory  250,000 ns
Round trip within same datacenter   500,000 ns
Disk seek                           10,000,000 ns

garudareiga

Sublime Text 2 – Useful Shortcuts (PC)

Loosely ordered with the commands I use most towards the top. Sublime also offer full documentation.

Editing

Ctrl+C	copy current line (if no selection)
Ctrl+X	cut current line (if no selection)
Ctrl+⇧+K	delete line
Ctrl+↩	insert line after

garudareiga

import logging

def foo():
    logging.debug('Dump debug message')
    logging.info('Dump info message')
    logging.warn('Dump warn message')
    logging.error('Dump error message')
    logging.critical('Dump critical message')