the following code implements tagging the data. After a carPlate appears (set to 2 for the first time), the mark is invalid within 1 hour (set to 1), the first one for more than 1 hour is set to 2, and so on. the main problem is that I have several ta...
How to get information such as device screen size, status bar height and so on in flutter? because UI is highly customized and material style is not suitable, you need to build your own navigation bar (or title bar). The height of the status bar is un...
question 1: worker, the device on my side has successfully logged in and bound uid,. When receiving heartbeat instructions, I made a judgment on whether uid is online, but when the device successfully logged in for the first time and sent a heartbeat, G...
when you install the latest version of mysql, on Ali CVM, you can log in from the command line, but when you log in with navicat for mysql, you will be prompted client does not support authentication protocol requested by server;consider upgrading MySq...
look at the worker process creation section of the php-fpm source code, and there is one thing I don t understand. when php-fpm is initially started, the execution flow is as follows: main-> fpm_run-> fpm_children_create_initial-> fpm_children_make ...
for example, let a=1; for(let i=0;i<3;iPP){ console.log(a); let a=2; } running in the browser s console will report an error, and I know the reason. outputs undefined,2,2 when running in vue-cli. If I comment out the babel in loader, the...