energy drink design template

Introduction to Template Method Patterns Template method, as the name implies, is the general process of doing some tasks. If there are many self-introduction templates on the Web, the recommendation template, that is, the beginning and end of the content may be similar, and in the middle of the need for customers to modify the use.

Template method Pattern Definition: Define the skeleton of an algorithm in a method, and defer some steps into the subclass, the template method allows subclasses to redefine some of the steps in the algorithm without altering the algorithm structure.Design principles: Do not call us, I will call you, (like headhunters and job seekers, job seekers do not need to find a headhunter, headhunting as long as the

. We continue to supplement the various subsequent additions based on the original code, and our code becomes unsightly under the new if statement line. Of course, as programmers, we don't have much of a say in demand, and there's nothing we can do about it. But we can do our best to design the architecture of the program, let us write the code more extensibility, so that we can deal with a variety of requirements changes. Below you will use the

In an abstract class, the way in which methods are executed is publicly defined, subclasses can be implemented as required, but calls are made in the manner defined in the abstract class, typical applications such as banking processes, and brewing beverage processes. The following is a simple example, with boiling water brewing beverage, divided into four steps: boil, brew beverage, pour the drink into the cup, add seasoning.1.

different, but can be generalized to two the same behavior.Public abstract class Drink { //Water heaters Public void boilwater( ) { } //Pour into a water cup Public void incup( ) { } //Brew, abstract Public abstract void brewing( ); //plus materials, abstract Public abstract void xxincup( ); } Public class coffe : Drink {Public override void brewing( ) { } Public override void xxincup( )

lot of code? It's easier to have a similar drink in the future, to prevent a lot of repetitive code coming up.In fact, the above is using template method design mode In the example above, the template method is Preparereceipe ().The Caffeinebeverage class dominates the algorithm flow of coffee and tea, and the reuse o

, so just rewrite Step2 ~ STEP4,STEP1 can continue to use. First design a drinkmachine prototype, defined the production process and STEP1, because Step2 ~ step4 each have differences, it is left in the inheritance of Drinkmachine class to rewrite, this is template method patterns. Let's take a look at this architecture, and if a new drink is added after the

1. Template Method mode 1.1 object-oriented implementation of template method patternTake tea and coffee for example, can be organized into the following four steps Boil the water Brew a drink in boiling water Pour the drink into the cup Add seasoning First, create an abstract parent class to

() { } /** * Subclass cannot access the method * /Private Function buyaflight () { echo "Buying a flight\n"; } /** * This is also a final method * /FINAL protected function Takeplane () { echo "taking the plane\n"; }} beachjourney.php cityjourney.php 4. Test code tests/journeytest.php Expectoutputregex (' #sun-bathing# '); $journey->takeatrip (); Public Function testcity () {$journey = new Templatemethod\c