implementations that facilitate remote object creation.Ii. advantages and disadvantages of prototype design patternPros: In prototype mode, you can dynamically add product classes without affecting the whole day structure, just copying an object.Cons: Because the prototype mode implements the interface for each class
1. Prototypesprototype Design pattern the so-called prototype design pattern, in fact, is the object copy, this feature in all languages are basically exist.We know that in OC, Object assignment is actually a reference copy of an object, which is actually equivalent to a poi
()); System.out.println (Wangyang);The two lines in the middle are all false. This indicates that a deep copy was made.Advantages of Prototype modeprototype patterns are used to create complex or time-consuming instances, because, in this case, copying an existing instance makes the program run more efficiently, or creating values equal, but naming different homogeneous data .Attention:1. The prototype sch
Design Pattern Five: Introduction to prototype mode (PROTOTYPE)
The prototype pattern is one of the creation patterns that creates new objects by copying the prototype objects.
The univ
;
}
}
There are two specific implementations (CONCRETEPROTOTYPE):
Copy Code code as follows:
public class Soupspoon extends abstractspoon{
Public Soupspoon () {
Setspoonname ("Soup spoon");
}
}
public class Saladspoon extends abstractspoon{
Public Saladspoon () {
Setspoonname ("Salad spoon");
}
}
Calling the prototype pattern is simple:
Copy Code
Design
Java Design Pattern---prototype (prototype) mode
Definition: Specifies the type of object to create with a prototype instance, and creates a new object by copying the prototypes. The p
Design Pattern (6) prototype Pattern
1. Let's talk about Naruto's shadows
The Naruto stole the scroll and learned the banned technique: Shadow separation. When Naruto uses the shadow separation technique, many people will appear exactly the same as Naruto, just as copied, this film separation technique is called
Prototype mode (Prototype pattern)IntroducedSpecifies the kind of object created with the prototype instance, and creates a new object by copying the prototype.ExampleThere is a message entity class, and now you want to clone it. MessagemodelUsing system;using system.collections.generic;using system.text;namespace pat
specifies the kind of objects to create using a prototypical instance. prototypes of new products are often built prior to full production, but in this example, the prototype is passive and does not participant in copying itself. the mitotic division of a cell-resulting in two identical cells-is an example of a prototype that plays an active role in copying itself and thus, demonstrates the
class cannot be called, so The prototype class needs to modify the scope of the Clone method to the public type.
Prototype mode is a relatively simple mode, it is very easy to understand, implement an interface, rewrite a method to complete the prototype mode. In practical applications, prototype patterns rarely
Design 1. Why do you use prototypes? The benefits of using prototypes
For example, we have a toolbar button, a New button, which is an instance of ToolBarButton, it has a length, a width attribute, and so on, and the property is assigned a value.
Now we're going to add a save button, which is also an instance of ToolBarButton, which has a length, width, and so on, but it's not assigned a value, and it's the same value as the New button.
If we don't
Motive (motivation)In software systems, it is often faced with the creation of "some complex objects".These objects often face drastic changes due to changes in demand, but they have a fairly consistent interface. How to deal with this change? How to isolate "these volatile objects" from "Client programs (using these objects)" so that "client programs that rely on these volatile objects" do not change as demand changes.Intentions (Intent)Use the prototype
PHP design pattern-Prototype pattern statement: This series of blog reference material "big talk design pattern", author Cheng Jie.
Use a prototype instance to specify the type of the
Design Pattern 5-prototype Pattern
1. Interpretation 1.1 Definition
Use a prototype instance to specify the type of the object to be created, and copy the prototype to create a new object.
1.2 Analysis
The concept description is a
The intent of the prototype model is:
By giving a prototype object to indicate the type of object you want to create, you can then create more objects of the same type with the method of copying the prototype object.
This pattern has been implemented in the Java class Library, so long as you define a class that imple
PHP design pattern-prototype Pattern
Use a prototype instance to specify the type of the object to be created, and copy the prototype to create a new object. The Prototype mode allows
Definition of prototype mode
Prototype is the pattern applied to the copy operation. This pattern is initially defined in design patterns (Addison-Wesley, 1994 ), it defines "using a prototype instance to specify the type of the o
public applications, so through the prototype mode, you can solve this problem.
Because the type itself can implement this method, but it also has some shortcomings. Every object implements this method, which is undoubtedly a huge workload, however, in some special environments
In the project, the prototype mode may be a good choice.
8. Series progress
Creation type
1.
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.