problem description python3 uses process communication, I crawled to some agents, need to check availability, use the validator function, and then I opened the process pool to run the validator function. Validator will put the available agents to Queu...
suppose I now have a process that prints "hello world " in a loop. From a process perspective alone, will it be assigned a port number when I start it? in other words, is the port number only available when I get the process bound, or is it randomly ...
when any thread X executes the wait () and notify () methods on any thread Y, it needs to acquire the lock first. it is said that the locking mechanism is to solve the critical resource problem, so does it allow threads to start and pause access to any ...
Why do pipes have to be half-duplex from a source point of view? ...
Python version: 2.7 now you need to use tornado to implement a function like this: 1. Create multiple processes using tornado. 2. The method of reading configuration information from the database is written in the process, and the read configurat...
there are two classes in a java file, one is that the main class public class lab01_04, contains main functions, and the other is that if class a, does not call methods in class an in main, class a will not execute (methods in class a will not be execut...
for example, there is no problem for the project to run locally. Once deployed to the server, a class cannot find an error root cause java.lang.NoClassDefFoundError: org apache commons codec binary Hex com.mal.util.code.MD5Utils.md5Hex(MD5U...
problem description add demo to router-view according to the demo that can be found on the Internet (not the official website of vue). ...
A large binary tree with uncertain tree hierarchy. Now we need to realize the following requirements: 1. Record hierarchical relationships. For example: to give you a node id:9, needs to find out the son or grandson under this node, or. Or all descenda...
ele.fadeOut (). Queue (); will affect subsequent fadeIn () operations on ele. The code is as follows: <head> <meta charset="UTF-8"> <title>Title< title> <style> .container{ width: 90%; height...