Israel-Miles

package main

type decreaseVolumeCommand struct {
    device device
}

func (c *decreaseVolumeCommand) execute() {
    c.device.decreaseVolume()
}

Israel-Miles

package main

import "fmt"

type tv struct {
    isOn bool
    volume int
}

func (t *tv) on() {

Israel-Miles

package main

type button struct {
    command command
}

func (b *button) press() {
    b.command.execute()
}

Israel-Miles

package main

func main() {
	tv := &tv {
		isOn: false,
		volume: 10,
	}

	// Instantiate commands
	onCommand := &onCommand{

Israel-Miles

package main

import "fmt"

type Observer interface {
	Update(value int)
}

func createWeatherStation(name string) *WeatherStation{
	return &WeatherStation{Name:name}

Israel-Miles

package main

import (
	"fmt"
	"math/rand"
)

const (
	maxTemperature = 120
	minTemperature = -30

Israel-Miles

package main

func main(){
	// Initialise our sensors and stations
	coSensor := createWeatherSensor()
	wySensor:= createWeatherSensor()
	denverStation := createWeatherStation("Denver Weather Station")
	vailStation := createWeatherStation("Vail Weather Station")
	cheyenneStation := createWeatherStation("Cheyenne Weather Station")

Israel-Miles

package main

type pizza interface {
	getPrice() float64
	getCalories() int
}

type cheesePizza struct {
	calories int
	price float64

Israel-Miles

package main

const (
	pepperoniPrice = 1.75
	artichokePrice = 2.00
	anchoviePrice = 2.50
	tomatoePrice = 0.75

	pepperoniCalories = 200
	artichokeCalories = 150

Israel-Miles

package main

import "fmt"

func main() {

	theBombPizza := &anchovieTopping{
		pizza: &artichokeTopping{
			pizza: &tomatoeTopping{
				pizza: newCheesePizza(),