I am a graduate of the class of 2018. When I graduated, I felt great pressure on employment. I interviewed a small software company and joined the job. At that time, I felt that the development prospect of the company was still considerable, and I didn ...
, this will definitely lead to an error, and then the background asks me that if I use a domain name, the port must be 80, right? can I add a port request to ip? Thank you, kind-hearted man, for helping me as an idiot. ...
problem description there is a shopping cart cartList field under the user table. The field type is as follows: cartList: [ { shopId: { type: Schema.ObjectId }, shopName: String, goodsList: [ ...
ask a question about Linux pipes for example, the command cat a.log | head if the a.log size is 1T, how is this command executed? how does the program cat execute after head prints the first ten lines? where is the data that is not written to the p...
sed-n 1320p data.csv > data.csv if I write this, data.csv is empty? Why I want to append or not delete the original content at the end ...
problem: the project needs to develop 485 serial communication on the android panel. The serial port needs to be monitored after the read command is sent, and the communication is not considered to have failed after N time. Use java s FutureTask with F...