private variable

I won't talk about the shallow copy. All of them are reference objects. Some examples of the deep copy listed on the Internet also have more or less problems. I have tried it, in some special cases, a strange problem may occur. Here is a perfect

The second day of Python-core style of the Foundation, and core of python on the second day I. syntax and statements #: Comment \: Press enter to continue the previous line. You can use it to split a line into multiple lines when the statement is

Usage One: ConstantsBefore JDK1.5, we defined constants: public static fianl ..... Now, with enumerations, you can group related constants into an enumeration type, and enumerations provide more methods than constants.public enum Color { RED,

Code GitHub Address: https://www.github.com/lozybean/learn_www1. Memory structure; The logical memory can be divided into four segments: Stack space segment, heap space segment, data segment, code segment;The space of the stack space is small, the

In the class, the general set and get methods are designed to simplify the reading and writing of properties, which differs from the normal get and set methods for individual properties, which must provide a pair of methods for each property, and

JavaScript closures have two uses: one is to access variables inside the function, and the other is to keep the value of the variable within scope. The function is the only scoped object in JavaScript, so the closure of JavaScript depends on the

As a software development model, monomer mode has been widely used in many object-oriented languages, and in JavaScript, the monomer pattern is widely used, but because the JavaScript language has its unique object-oriented approach, Cause it and

Achieve motivationThe factory method is the simplest way to create a derived class object, and is also very common, and the factory method internally uses Switch-case to create different derived class objects based on different keys, the following

The Singleton mode has three main points:First, a class can only have one instance;Second, it must create the instance on its own;Third, it must provide the instance to the entire system.Copy codeThe Code is as follows:/* The Singleton mode is used

PHP object to array (object) read {code...} $ arr how to read temp value? $ Arr [& #039; temp & #039;], $ arr [& #039; * temp & #039;] cannot read official instructions: if an object type is converted to array, the result is an array, and its unit

Java basics-attributes of classes in Java-general Linux technology-Linux programming and kernel information. For details, refer to the following section. Public, private, and protected display the attributes and service types of the three types.

/*** Created by Liu pengcheng on. Blog*/Class GouZaoHanShu {Private int age; // private variable agePrivate String name; // private variable name GouZaoHanShu () // The default constructor value is null.{System. out. println ("A:" + "name =" +

First of all, three annotations.Primary key annotationsPackage comments;import java.lang.annotation.Documented; import java.lang.annotation.elementtype;import java.lang.annotation.inherited; import java.lang.annotation.Retention; import

OC basics -- Property, oc -- property Compiler commands: Used to tell the compiler what to do @ Property: @ Property is the instruction of the compiler, which tells the compiler to automatically generate the setter and getter declarations in @

Android-frame-by-frame animation, supplementary animation learning, android-by-Animation I. frame-by-frame animationFrame-by-frame animation is used to specify a series of Drawable objects used as the View background. It is similar to a

Internship Training--java Foundation (2)1 Java variable typesIn the Java language, All variables must be declared before they are Used. The basic format for declaring variables is as Follows:Type identifier [= value][, identifier [= value]

@property can access a python-defined function as a property, providing a more friendly way to access it, but sometimes setter/getter is Needed.Suppose a class CLS is defined, which must inherit from the object class, with a private variable __x1.

Details about JavaScript scopes and closuresJavaScript is a widely used language. It also has some characteristics and advantages. This article focuses on its scope mechanism and closure, and will discuss its mechanism from some examples. The scope

Take notes in the video tutorial of teacher bi:1. Class: Class defined with class. Defining a class is defining attributes (variables) and behaviors (functions (methods)). Properties and behaviors are common to members (member variables and member

What is a closure package?Let's look at a piece of code first:function A () { var n = 0; function Inc () { n+ +; Console.log (n); } Inc (); Inc (); } //Take another look at the code: