how large is a2

This is a division of the application, in Java has a large number of classes, with very convenient, but in C + + is not so easy,An integer is only 2^64 the addition or subtraction of two numbers. We can do it again with an array simulation, but the

Preface Recently, a very good general manager of the company resigned and gave me a banquet. She said to me, "You are a very good programmer." after that, she immediately apologized and said, "I'm sorry, I said that you are a programmer, did you

Today to learn the cloning of Java objects, in writing code, sometimes we write: Object 1 = Object 2, that is, Object 2 is assigned to object 1, but there is a problem, if we modify the property value of Object 2, the same property value of object 1

Methods for filtering large amounts of data in Javascript The main requirement is that the front-end obtains a large amount of data from the backend through Ajax, and needs to be filtered according to some conditions. The first filtering method is

C ++ from scratch (8) -- C ++ Example 1 The previous section describes some implementation methods of the function, but does not explain the syntax of the function, that is, what is the use of the function and why it is used. For this, this

Today, I suddenly noticed this problem. I have read a lot from the Internet and have benefited a lot. Record it and review it later ~ I have encountered this problem in my work before. Two users operate on one record at the same time. User A queries

Log4j example -- By Blues (zhaochaohua@sina.com) Part 1 Introduction The advantages of log4j are: 1. By modifying the configuration file, you can determine where the log information is output (console, file,...) and whether it is output. In this way,

-- By Blues (zhaochaohua@sina.com) Part 1 Introduction The advantages of log4j are: 1. By modifying the configuration file, you can determine where the log information is output (console, file,...) and whether it is output. In this way, you can

split large files with split In our actual production environment, will produce a lot of large files, the size of these files are different, some even have a good dozens of T size, then we analyze these files, then how to do? In this case, we can

Sometimes we need to query the large text instead of the database, then we need to stream the file and implement the query algorithm, but also parallel processing to improve performance. However, Java itself lacks the corresponding class library,