there is a volatile attribute in the netty internal logging framework InternalLoggerFactory that defaultFactory, does not understand why the volatile keyword is added, and if it is to implement a singleton, why not add the getDefaultFactory method in th...
public class TestClass { int i = 0; volatile boolean tmpvo = false; public void one() { i = 1; tmpvo = true; } public void two() { if(tmpvo) { int j = i; ...... } } } suppose that after the one () metho...
for unprotected multithreads, it is uncertain when some data is modified in one thread and when it is submitted to main memory, and the values used by other threads are not necessarily up-to-date. in the case of volatile modification, it is guaranteed t...
problem description there is a problem when using antd pro. When the payload parameter in effects does not change, there is no request background, but the cache of the last request is obtained the environmental background of the problems and what me...
recently, I am doing a requirement. When the text content is more than three lines, it displays "expand " and displays an ellipsis. Click the expand button to switch to put away, but there is a problem, that is, I don t know how to judge whether the t...
when using axios to request data, the data is returned very slowly, even if it is just fetching the data without rendering the home page, it will take a long time to load. excuse me, this is the problem of axios itself network as shown in the pic...
var arr = [1,2,3,4,5,6,7] for(var j in arr){ console.log(j+1); console.log(j-1); } automatically converts j to string processing when outputting jroom1. will be processed digitally when outputting jmur1. what is the reason for this? ...
I would like to ask why the formal parameter of the Python function can be changed sometimes and sometimes not? Forgive me for not knowing how to describe it, so I borrowed the concept of "deep and shallow copy ". def func(x,y,l): x = y+1 l.ap...