as follows, the main thread calls push () , and the second thread front () reads the head of the queue, and the team is busy when it is empty. As a result, line 11 front () reported an error deque iterator not dereferencable . After taking a look ...
In SGI STL, unused memory is mounted as a linked list in free_list . If there is enough memory in free_list , it is returned directly. However, memory recycling is not necessarily in the order in which memory is requested, which leads to the fact that...
We usually new an object, and the process of requesting memory is completed by operator new, so how does allocator in stl take over operator new to complete the memory request? How is the memory request right of an object transferred? I don t think oper...
when learning < random > library, only seed_seq does not quite understand although I went to MSDN, and cppreference, it is not very clear that there is too little information about seed_seq on Google. my understanding is: when a given seed is not ve...
the standard library container before CPP11 overloaded constant and non-constant object versions for begin and end, and defined cbegin and cend for constant version lines in 11. 11 what is the point of doing this, that is, what is the advantage of suc...
recently, I intend to cache chat data locally. I encountered some problems in the process of using indexedDB,. The code is as follows let db; let chatDB = { indexedDB: window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB || window.msIn...
Hello, everyone TestDebugIdea ...
https: jsfiddle.net 7Lypucvo. can I use < transition > of vue to realize the horizontal bar translation transition at the bottom? I looked at the official documents and it seems that I can only add in and leave the transition? ...
1. Write the landing page with react, after calling the background data with axios, judge the route of the page to jump according to the return value, how to jump? 2.axios.get ( login login.action?username= +name+ &password= +pd, {) timeout: 1000...
my authorization command is grant select on *.* to user_name @ % identified by password ; navicatpingIPpingtelnet3306 3306IP I hope someone can see this problem and take a look at it for me. Thank you. ...