collect a website too frequently, fewer and fewer web pages can be collected, and even be blocked. Only by controlling the collection speed and frequency can IP, continuously obtain data, and the browser s cookies should be cleaned regularly. ...
collect a website too frequently, fewer and fewer web pages can be collected, and even be blocked. Only by controlling the collection speed and frequency can IP, continuously obtain data, and the browser s cookies should be cleaned regularly. ...
collect a website too frequently, fewer and fewer web pages can be collected, and even be blocked. Only by controlling the collection speed and frequency can IP, continuously obtain data, and the browser s cookies should be cleaned regularly. ...
I want to make a calculator in WeChat Mini Programs. There is only an input box and an output box. The user enters a numeric password (6-12 digits) into the input box and then clicks the calculation button. The system will use this password plus the cur...
I see that many projects have this dll which should be compiled into dll by node. So how to call this ...
recently I have been learning the source code of muduo, and I see a method in the Thread class void runInThread() { *tid_ = muduo::CurrentThread::tid(); tid_ = NULL; latch_->countDown(); latch_ = NULL; } I would like to ask...
python has matplotlib,. I don t know whether CPP has the same level of drawing library. If you want to achieve the drawing effect of matlab in the MFC framework, you can achieve some simple operations like matlab, such as zooming in and out, coordinate ...
tcp sends send-q blocking, preventing data from being sent. Video conference product, run H323 protocol stack to make a call, the first call is normal, after hanging up, when making the second call, tcp data can not appear send, so that the call can...
sources of topics and their own ideas for example: 8000000000000000000000000000000001000 1000 & | ^ -sharp-sharp-sharp related codes -sharpinclude <iostream> using namespace std; { int y; cin >> y; fo...
Segmentation fault: 11 error occurred in a circular statement the platform version of the problem and what methods you have tried platform version: MacOSX 10.14 tried method: check to see if any memory has not been freed; check to see if there is c...
Segmentation fault: 11 error occurred in a circular statement the platform version of the problem and what methods you have tried platform version: MacOSX 10.14 tried method: check to see if any memory has not been freed; check to see if there is c...
problem description Xiaoming and Xiaofang go out to play in the country. Xiaoming is in charge of driving and Xiaofang is in charge of navigation. Xiaofang divides the possible roads into main roads and paths. The main road is easier to walk, and Xiao...
I can find the circle when I look for the Hoff circle on a grayscale image through opencv, but once I binarize that grayscale image through OpenCV, I can t find the circle. Here s some code Bitmap bitmap = BitmapFactory.decodeResource(getResources()...
Let s ask my questions in the form of judgment questions. if a process creates a thread, the thread runs normally indefinitely (assuming so). Suddenly the process exits due to an exception, and the thread disappears and does not exist in the syste...
this b xa5 x5a = b xa5z how is it converted? You can tell that this is hexadecimal from the output of 1BI 2. ...
problem description Alice and Bob are playing tic-tac-toe. the rules of tic-tac-toe chess game are simple: two people take turns to put pieces on the 3x3 board, Alice puts "X ", Bob plays "O ", and Alice takes the lead. When the same piece occupies ...
-sharpinclude <algorithm> -sharpinclude <bitset> -sharpinclude <cassert> -sharpinclude <cmath> -sharpinclude <cstdio> -sharpinclude <cstdlib> -sharpinclude <cstring> -sharpinclude <functional> -sharpinclude...
I want to write a comic platform server, comics will be divided into paid and free, how should I deal with these picture resources. If I put it on oss, how can I tell whether the requesting user has paid or not? under the guidance of which god, I would b...
recently I re-came up with an algorithm in an item I wrote before, which was encapsulated into a .h file for calling, but there was a problem when I took it out and used it alone. The culprit of the problem is the Vector variable. Because of the projec...
problem description encountered a link error while completing the exercise on CPP Primer. Undefined symbols for architecture x8634: "StrVec::alloc ", referenced from: StrVec::alloc_n_copy(std::__1::basic_string<char, std::__1::char_traits<...
Family bucket "react": "^16.2.0", "react-dev-utils": "^5.0.0", "react-dom": "^16.2.0", "react-redux": "^5.0.7", "react-router-dom": "^4.2...
case: a table has at least 30 million pieces of data per day. There are thousands of types. Can you now quickly read the maximum values of the day for thousands of types at a time, that is, the last record time of the day? Maybe 15:00. Maybe 23:00. I m...
I set servlet mapping <servlet> <servlet-name>Site< servlet-name> <servlet-class>com.demo.controller.App< servlet-class> < servlet> <servlet-mapping> <servlet-name>Site< serv...
there is only one page for the project at present, and there may be more single pages in the future. So my router is just like this for now: import Vue from vue import Router from vue-router import index from @ components index Vue.use(Rou...
when is the closure generated? Is it when the function is defined or when it is executed? = add = ...