private instance variables

In the first version of iOS:We declare both the property and the underlying instance variable for the output, when the property is a new mechanism for the OC language, and you must declare the instance variable that corresponds to it, for

There are two types of member variables for the ①java class:         A variable that is modified by the static keyword, called a class variable or static variable           Another no static modifier, for member variables      ② popular Point said:  

This is the record on the document.The Scope of Instance VariablesTo enforce the ability of a object to hide it data, the compiler limits the scope of instance variables-that is, limits Their visibility within the program.To force an object to hide

To enforce the ability of a object to hide it data, the compiler limits the scope of instance variables-that is, limits Their visibility within the program.To force an object to hide its data, the compiler restricts the scope of the instance

Attribute property in classIn the first version of iOS:We declare both the property and the underlying instance variable for the output, when the property is a new mechanism for the OC language, and you must declare the instance variable that

Reference: http://rubyer.me/blog/485 Http://sunnyshuhai.iteye.com/blog/286970 In Ruby, global variables, instance variables, class variables, and symbol are often very different from other languages such as Java and are easy to mix up.First, there

1. Can a local variable be renamed with a global variable? A: Yes. Global blocking will be performed in some cases. To use global variables, you must use "::" A local variable can have the same name as a global variable. A local variable with the

A public method that has the permission to access private variables and private functions is called a privileged method. There are two methods to create a privileged method on an object. First, define the privileged method directly in the

#!/usr/bin/env python#-*-coding:utf-8-*-#@Time: 2017/11/08 8:46#@Author: Lijunjiang#@File: class3.py"""The private and private methods of a class can be defined in Python by adding a double underscore to the property variable name, a special

Variable TypeDescriptionfeaturesclass variables (static variables)variables independent of the method, modified with staticClass variables, also known as static variables, are declared in the class with the static keyword, but must be outside the