Programmer Think

1. Preface Preliminary knowledge for reading this article: Constructor, copy construct, copy constructClass access qualifierClass instantiationthis pointer Reference return catalog: Operator overloading Friend function, friend class, inner classDate class After we quickly get started with C + +, the first thing to bear the brunt is to lear ...

Distributed lock - Implementation Based on Redisson aspect We have learned from the previous two articles Implementation based on Database as well as Redis based implementation We learned about the implementation of distributed locks from the database and Redis levels. In this article, we learn about distributed locks from the aspect of re ...

object-oriented programming object: represents a specific thing in the problem space of the objective world, and also represents the basic element in the solution space of the software system Object oriented programming (OP): it is not only a programming paradigm, but also a method of program development. 1. Class Class (clas) is the constru ...

summary 1. Problems solved Blocking operation: keyboard inputTime consuming operation: cycleTime slice rotation strategy 2.I/O BIO: blockingNIOAIO: asynchronous operation Process and thread 1. Introduction System performance bottleneck: long waiting time, fake death, blockingThe user inputs an instruction and the computer performs an ope ...

CyclicBarrier 1. Introduction Loop fence is used for thread cooperation and waiting for threads to meet a certain count. When constructing, set the count number. When each thread executes to a time when synchronization is required, call the await() method to wait. When the number of waiting threads meets the count number, continue to exec ...

1, Tomcat directory structure (taking version 8.5 as an example) Bin directory. The bin directory is mainly used to store tomcat commands. There are two main categories. One is based on sh (linux command), and the other is with bat (windows command). Many environment variables are set here, For example, you can set JDK path and tomcat path st ...

Write in front: Hello everyone, I'm a rookie xiaopang p. Today's blog is a Java method. Method is actually a function of c language. The article also mentioned overloading. We should pay attention to distinguish overloading and rewriting (which will also be mentioned later). In addition, recursion is also introduced. About the blog content, if ...

SCAU comprehensive experiment Java source code annotation and keyword analysis program (with class diagram) Title: Category: D comprehensive experiment Keywords: class, object, encapsulation, aggregation, composition, inheritance, IO Content requirements: 1, Experimental purpose (1) Master the basic methods of object-oriented programming ...

come to the point In the process of automated testing, test results are generally sent to relevant personnel in the form of e-mail. Then, in Python, how to write code to send e-mail to the corresponding users? At the same time, there are different forms when sending e-mail, such as text, HTML, picture attachment, non picture attachment, etc ...

Smart pointer Smart pointer is essentially a template class. Generally, the object of this class is used instead of pointerThe smart pointer is reflected in the memory release problem. Using the smart pointer to manage the new object will no longer require manual deleteshared_ptr get() function: a reference to a pointer that returns datau ...