what static keyword

1. Features of object-oriented thinking(1) is a more consistent with our thinking habits of thought (lazy thinking, I do not do things themselves, to others to do)(2) complex things can be simplified (simple for the user, the object is still very

A static member function of a class cannot access non-static member functions and non-static member variables.But the reverse is true.That is, non-static member functions can access static member functions and static member variables.This can be

First, finaldepending on the context of the program, the Java keyword final has the meaning of "This cannot be changed" or "final state", which can be used to modify non-abstract classes, non-abstract class member methods, and variables. There are

Question: How do you count the number of objects? (1) Common member variables? No, because for normal member variables, objects have their own member variables, and they are independent of each other, so it is not possible to count the number of

The static keyword declares that a property or method is related to a class and not to a particular instance of a class, so such a property or method is also referred to as a class property or class method. If the access Control permission allows,

Inheritance of ClassesA class can inherit the properties and methods of another classthe inheritance of classes in PHP is only single inheritance, there is no multiple inheritance, that is, a class can inherit only one class, and cannot inherit

In php, we can directly add a static method before a function or variable. it is similar to a static variable in use and does not need to be instantiated. we can directly use: called, below I In php, we can directly add a static method before a

A brief analysis of the usage difference between static and non-static methods in PHP In PHP programming, the Static keyword declares that a property or method is related to a class and not to a particular instance of a class, so that such a

1. Final keyword The final keyword in Java corresponds to the const keyword in c/C + +. In Java, the final keyword can be used to describe a class, method, member variable: . The final class cannot be inherited, there are no subclasses, and the

  Both C and Java have the concept of global variables, but their usage is still somewhat different.1. in Java, there is no strict location rule for the definition of global variables. Global variables can be defined at the beginning of the class or

From: http://klcwt.iteye.com/blog/452834 Create another class in a class called the internal class of the member. The internal class of this Member can be static (modified using the static keyword) or non-static. Static internal classes have

Differences between global variables, local variables, static global variables, and static local variables C ++ variables have different scopes based on different lifecycles at defined locations. They can be divided into six categories: global

Static can be used in either of the following ways:Process-orientedProgramDesignStatic andObject-Oriented ProgrammingStatic. The former applies to common variables and functions, and does not involve classes. The latter mainly describes the role of

C # differs greatly from Java in understanding the static keyword, mainly in the internal class. In addition, because JAVA does not have a data structure similar to delegate, internal classes must take important responsibilities such as

Static and static keywords in C ++ Static means static. Here I want to systematically describe the role of the static keyword. Of course, it mainly describes the role of the static keyword in the development languages C and C ++. For other functions,

Java Notes 17. static and final usage in java,. javastaticIn the last few blog posts, we know that when we write a class, we are actually describing the attributes and behaviors of the Class Object, without generating a substantive object, the

PHP static member variables and non-static member variables, php static Data members can be divided into static variables and non-static variables. Static member: A member in a static class is added with a static modifier, which is a static member.

Original article: http://www.codeproject.com/Articles/17038/COM-in-plain-C-part-8 Download routine-419kb Content Introduction Script code persistence Script code and "Naming item" Call a specific function in the script Query/set the variable

Create another class in a class called the internal class of the member. The internal class of this Member can be static (modified using the static keyword) or non-static. Static internal classes have various restrictions during definition and use.

StaticClassStatic class (Java) In general, the class cannot be modified using static. If you must use the static modifier class, the static modifier is usually an anonymous internal class. Create another class in a class called the internal class