Template Pattern (8)
模板模式：
定义一个算法的几本框架和操作步骤，在其派生类中具体实现算法实现步骤的细节，派生类不改变算法的结构。
using System;
using
System.Text;
using
System.IO;
namespace Hello
{
public abstract class CaffeineBeverageWithHook
{
public void
PrepareRecipe()
{
BoilWater();
Brew();
PourInCup();
if (CustomerWantsCondiments())
{
AddCondiments();
}
}
public abstract void Brew();
public abstract void AddCondiments();
void BoilWater()
{
Console.WriteLine("Boiling
Watter...");
}
void PourInCup()
{
Console.WriteLine("Pouring
into cup...");
}
public virtual bool CustomerWantsCondiments()
{
return true;
}
}
public class CoffeeWithHook : CaffeineBeverageWithHook
{
public override void Brew()
{
Console.WriteLine("Dripping
Coffee through filter...");
}
public override void AddCondiments()
{
Console.WriteLine("Adding
Sugar and Milk...");
}
public override bool CustomerWantsCondiments()
{
Console.WriteLine("Would
you like sugar and milk?(y/n)");
string answer = Console.ReadLine();
if (answer.ToLower().ToString() == "y")
{
return true;
}
else
{
return false;
}
}
}
public class TeaWithHook : CaffeineBeverageWithHook
{
public override void Brew()
{
Console.WriteLine("Dripping
Tea through filter...");
}
public override void AddCondiments()
{
Console.WriteLine("Adding
Sugar and Milk...");
}
public override bool CustomerWantsCondiments()
{
Console.WriteLine("Would
you like sugar and milk?(y/n)");
string answer = Console.ReadLine();
if (answer.ToLower().ToString() == "y")
{
return true;
}
else
{
return false;
}
}
}
class Program
{
static void Main(string[] args)
{
CoffeeWithHook coffee = new
CoffeeWithHook();
coffee.PrepareRecipe();
TeaWithHook tea = new
TeaWithHook();
tea.PrepareRecipe();
}
}
}
