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http://blog.csdn.net/hitachi_ht/article/details/38150955 The practice of many predecessors proves that the accuracy of Timers in C# can not meet the requirement of 60fps. This can be done as an experiment, using two Timers, one 1s, the other 0.01667s, and then counting + 1 for tick s of the latter timer, counting the n ...

introduce APT(Annotation Processing Tool), an annotation processor, is a tool for processing annotations, specifically a tool for javac, which scans and processes annotations at compile time. The annotation processor takes Java code (or compiled bytecode) as input and generates. java files as output. Simply put, at compi ...

error When the application is changed from http to https, an error is reported. The following is an error: NSURLSession/NSURLConnection HTTP load failed (kCFStream Error Domain SSL, -9813) or Error Domain=NSURLErrorDomain Code=-1202 "The certificate for this server is invalid. " Reason This is because your https certificate i ...

Using GRPC and protobuf in Android studio Kotlin gRPC Java now provides development and usage support for Kotlin projects built with Gradle. //Three core packages for adding grpc // You need to build grpc-java to obtain these libraries below. implementation "io.grpc:grpc-okhttp:$CURRENT_GRPC_VERSION" // CURRENT_ ...

Preface When we first wrote gradle scripts, we usually wrote all the packaged scripts in the build.gradle file, which is easy to cause problems. Dependent version duplication of build.gradle configuration or inconsistency of compileSdkVersion of multiple modules in the project; It will lead to some dependency duplication and confl ...

It's better to have a c++ basis. Update one article every day. This is a basic article. 1. operator2. variable3. Basic Input and Output4. string5. list6. tuple7. dictionary8. set9. Simply talk about the cycle or something. 1. operator Special a / b: Floating point number, a // b is an integer, discarding fraction a**b is the B power of a And c ...

There are many ways to set cookie s in js. The first one is: (This is the code of w3c official website) <script> //Set cookie function setCookie(cname, cvalue, exdays) { var d = new Date(); d.setTime(d.getTime() + (exdays*24*60*60*1000)); var expires = "expires="+d.toUTCString(); document.cookie = cnam ...

The last version of arcgis for android is 10.2.9. It is said that the version will not be updated and maintained after that, but will jump directly to the 100 series, which is quite different from the previous version. But it also adds more functions and optimizes performance a lot. Specific differences are not repeated here, m ...

Hadoop Distributed File System (HDFS) is a Java-based distributed file system.Distributed, scalable and portable file systems are designed to span large clusters of commercial servers. The design of HDFS is based on Google File System (GFS). https://ai.google/research/pubs/pub51) . Like many other distributed file systems, HDFS has a large amo ...

1. Command format: cd [Directory name] 2. Command Function Switch the current directory to [directory name] 3. Common examples 1. Enter the system root directory Order: cd / Description: Enter the system root directory. After executing the above command, take a look at the ls command. The current directory has reached the system root direct ...