Programmer Think

1. Character stream Causes of character stream Read English characters and numbers with byte stream No problem can be displayed normally Read Chinese characters with byte stream There may be a problem Codec How is a character stored in a computer? Based on a coding table, the corresponding integer value (coding value) is store ...

1, Introduction: In the previous blog, we analyzed the whole jni process and message mechanism of ijkplayer in detail. The analysis of process mechanism helps us to have a general understanding of the whole architecture, which is convenient for the subsequent analysis of audio and video decoding and output rendering. The analysis of message mec ...

Author: fabricated belief Original text: https://segmentfault.com/a/1190000013803247 This paper introduces several main new features of 8.0 in relational database. You may already know that MySQL has provided NoSQL storage function since version 5.7, and some improvements have been made in 8.0. However, since this function is rarely used in p ...

1. What is interface testing As the name suggests, interface test is to test the interface between systems or components, mainly to verify the exchange, transmission and control of data, management process, and mutual logical dependency. The interface protocols are divided into HTTP,WebService,Dubbo,Thrift,Socket and other types. The test type ...

The code reproduction has been completed before, and I will also part in Shanghai tech_ A_ Final and part_ B_ The final dataset results came out. Now do a detailed interpretation of the code to deepen your understanding. If there is anything wrong, please give us more advice!! (this article has read this paper by default and has a certain under ...

1, Quick start 1. Check the health status of the cluster http://localhost:9200/_cat http://localhost:9200/_cat/health?v Note: v is used to require the header to be returned in the result Status value description Green - everything is good (cluster is fully functional) Yellow - all data is available but some replicas are not yet alloca ...

Multi objective genetic algorithm In this paper, the optimization model of non optimal supplier is established by considering the idea of Pareto 2. In addition, the optimization model of non optimal supplier and non optimal supplier is transformed into multiple objective solutions. In addition, the genetic algorithm is used to minimize the cos ...

1, Smelly and long if... else No more nonsense. First look at the following code publicinterface IPay { void pay(); } @Service publicclass AliaPay implements IPay { @Override public void pay() { System.out.println("===Launch Alipay payment==="); } } @Service publicclass WeixinPay implements IPay { ...

1. HAProxy 1.1 introduction to haproxy HAProxy is a solution that supports virtual hosts by providing high availability, load balancing and proxy based on TCP and HTTP applications. Since 2013, HAProxy has been divided into community version and enterprise version. Enterprise website https://www.haproxy.com/ Community website https://www.hapr ...

Characteristics of class inheritance - construction method The name of the constructor is consistent with the class name. Therefore, a subclass cannot inherit the constructor of its parent class.Constructor is used to initialize member variables. Therefore, in the initialization process of a subclass, the initialization action of the parent cl ...