Programmer Think

1, Thinking in Java In learning Thinking in Java, I first learned about multithreading. During the learning process, I summarized some useful knowledge and made a note here. Introduction: sequential and parallel tasks Most of our programming problems can be solved through sequence problems. However, for some problems, if parallel executi ...

arthas online troubleshooting tool https://github.com/alibaba/arthas/blob/master/README_CN.md step Run our java program Start the jar file of arthas. We can see that the process number of the java program just running is 1, so type in the process number 1 and press enter. It will hang itself to this process Then you can use some command ...

Foreword: in the last article, we have learned statements, branch statements and while loops. Next, let's learn do... While loops, for loops and goto statements. (since this article is consistent with the previous article, the article directory is set according to the content of the previous article) 3.2 for loop We have learned the while ...

📑 Content of this article: This article is enough for the back-end personnel of the front and back-end asynchronous request Library of Axios~ 📘 Article column: Front end knowledge (knowledge points to be mastered at the back end) 🎬 Last updated: January 29, 2022 This article is enough for the back-end personnel of the front and back-end asy ...

1.goroutine 1.1 process and thread introduction ● process is an execution process of a program in the operating system and the basic unit for resource allocation and scheduling of the system ● thread is an execution instance of a process and the smallest unit of program execution. It is a smaller basic unit that can run independently than ...

1, Basic exception handling Exception handling mechanism: suspend the problem handling, not in the current function, but in other callers (for example, function 1 calls function 2, and function 2 also calls function 3. If an exception is throw n in function n, we can handle it in any of the previous functions.) What is an exception? Anything ...

A virtual function is a member function declared in a base class and redefined (overridden) by a derived class. When you reference a derived class object using a pointer or a reference to a base class, you can call a virtual function for the object and execute the function version of the derived class. Virtual functions ensure that the correct ...

Reading C language programming Chapter 2 variables and arithmetic expressions Author: Geekwyz This series of articles can help you lay a solid foundation The following is the main body In the previous section, I mainly introduced Hello,World! This program, today we look at the chapter of variables and expressions First, ...

Introduction: when debugging this C + + multi inheritance program with LLDB debugger at work, it is found that the pointer address obtained through LLDB print (alias of expression command) command is different from the address of C + + memory model actually understood. So what is the reason?Author Yang FuSource: Ali technical official accountI. ...

1, StringBuilder class 1. Difference from String The StringBuilder class is similar to the String class. The main difference between the two is that you can change the contents of the StringBuilder object, but you cannot change the contents of the String object. Recall that String objects are immutable. This means that once the content of the ...