int and long

1. Scope: public, private, and protected. The differences are as follows: scope: current Class, same package, Child Class, other package, public √ protected √ × friendly √ × private √ × when no write is performed, friendly 2 and Anonymous Inner

Generally in a project, there will always be a lot of environments. Like what: Production environment, pre-release environment, test environment, development environment The configuration files on each environment are always different,

1. 1 basic object-oriented conceptsThe basic idea of object-orientedObject-oriented is an emerging program design method, or a new program design specification (paradigm), its basic idea is to use object, class, inheritance, encapsulation, message

Basic Package Type The eight basic types of Java language correspond to eight "Packaging classes", each of which encapsulates a corresponding member variable of the basic type, it also provides some practical methods for this data type. The

In the data typeOne byte equals 8 bits, one byte equals 256 digits, that is 128 to +127 total 256Numeric typeIntegral typeJava integer types have a fixed number of table ranges and field lengths, and are not affected by the specific operating system

This article summarizes the built-in functions for numbers.The numbers include int () , Long () , float () , complex () , which can be used to convert a numeric type. These functions also accept string arguments, which return the numeric value

Query the number of digits in a Linux SystemWe often encounter situations where we need to query the number of digits in the linux system. The following are two methods that I usually judge for reference only.1. check whether there is a/lib64

Java and unsigned thingsWhat is the problem with the unsigned type in Java? In languages such as C and C ++, integer types with different lengths are provided: char, short, int, and long (in fact, char is not really an integer, but you can use it as

Jvm study note 2 (recommended to reduce GC overhead), jvmgc   I:Condition for triggering the master GC (Garbage Collector) The frequency of jvm gc is very high, but this GC takes a very short time, so it has little impact on the system. It is worth

9. Consistent types Most languages have basic types (int, long, and so on ). Advanced types are ultimately composed of basic types. It is usually useful to process basic and advanced types in the same way. For example, it is useful if the set can be

"Thinking before Class"1. What is an object? What is a class? What is a package? What is an interface? What is an internal class?2. What are the three properties of object-oriented programming? What are the characteristics of each of them?3. Do you

1. 4. Predefined types) C # provides a series of predefined types. They are quite similar to c/c ++. Predefined reference types include object and string. The object type is the basis of all other types. Predefined types include the number of

When querying the number of digits in a Linux system, we often encounter the need to query the number of digits in a linux system. The following are two methods that I usually judge for reference only. 1. check whether there is a/lib64 directory.

Reply content:Let me correct and comment. > 1. Print is no longer a statement, but a function, such as the original print ' ABC ' is now print (' abc ') However, python2.6+ can use the from __future__ import print_function to achieve the same

take you into the data type One: integers, floating-point numbers The definition and operation of integers and floating-point numbers in Python are the same as in C + +, and I don't need to say much here: Python defines integers without the

The Python 3.x starting version is Python 3.0, and the latest version is 3.3.3 Guido van Rossum, the father of Python, talked about the idea of Python 3.0: Until backward compatibility is broken, many flaws and errors cannot be repaired. As a

Problems in use: An Asp.net CRM Project stores custom types (serializable) in the Session and starts to use the InProc method. After a few months, everything has been harmonious, however, recently, with the increase in the number of users, sessions

Large-end encoding: the high bytes of word data are stored in the low address.Small-end encoding: Low-byte storage of word dataIn the lower address. Simply and intuitively,(Of course, this approach is not rigorous ).After reading the next CSDN blog,

Before giving you a detailed introduction to the C ++ data type, let's first understand the C ++ data type, and then introduce the C ++ data type comprehensively, and the length of the C ++ data type. I 'd like to share it with you here, hoping it

C # Learning -- Introduction (First Day ),I. Console output Output in the console: 1 console. writeline (); 2 console. readkey (); The last sentence is to ensure that the pop-up window will not flash.Ii. Notes 1. Single line comment: 1 // int a = 90;