you can easily add methods and attributes with Category through Objective-C Runtime,. his implementation principle is the object structure, objc_class contains the methodLists, is a secondary pointer, a pointer to the pointer. struct objc_method_l...
question: in the actual project, I use redis as the resource lock. Only the thread that acquires the lock is allowed to execute. And then finally release the lock. The thread was blocked for 16 minutes before the resource was released. try to solve:...
the current project needs online table editing data. Although the form developed by the front end meets the basic business needs, but the amount of data is too large, the page will crash. But the business side insists on ensuring the normal use of this ...
how do I invoke symfony s doctrine service to operate the database within a socket service? php website project done with symfony framework needs to use websocket service. The service written by socketio is started on the command line. Now it needs t...
background: spring Front end: xhr I would like to ask you, my background interface uses streaming to write a file to download (read the file out and stream it back with response), and the front end uses xhr to download the file, and the interface can l...
For the project written by vue-cli, the local test will not appear. After uploading to the server, you will sometimes report an error on the page . vendor.jsmanifest.js an error will be reported if the request occurs as shown in the figure above. The...