recently, when I was watching bilibili s last video about cPP, I had doubts, so I knocked on the code to run. The result is different from the output in the video. Solve everyone, video address: Peking University cPP tutorial 7 minutes and 35 seconds...
I have a class: <template class F> class test { public: test(F fn) : fn_(fn) { } private: F fn_; }; I want to specify F as std::function, for example F can be std::function < void () >. But there can be many kinds of std:...
I have been using GOLANG ES6 for the last two years, and I have written PHP for a few years before. I have studied C-sharp, C, but seldom; am I hesitant to learn CPP now? CPP has read CPP PRIME, so that s what it feels like. After reading the rookie...
recently, we are looking for a free monitoring mode tool for Apple to use with MDM development. The only way for Apple to enable supervisory mode is to connect the iOS device to the Mac and use Apple Configurator 2 (this operation will reset the device)....
there are many places in the program that need to use closures, and I didn t pay much attention to memory at the beginning of writing. Now that the program is finished, it is found that if the memory keeps increasing after running repeatedly, some thin...
topic description this problem occurs when individuals use BFS. I am puzzled. Please advise about the results . The code is as follows: -sharpinclude<iostream> -sharpinclude<stdlib.h> -sharpinclude<stdio.h> -sharpinclude<v...
I have seen the calculation of the average in a piece of CPP sample code, but I don t quite understand that this round () + 0.5 is a magic operation. Please take a look at it . stu[i].grade[0]=round((stu[i].grade[1]+stu[i].grade[2]+stu[i].grade[3]) 3.0...
recently I am learning windows programming, so I wonder if all windows under windows have handles and are controlled by windows API, even windows written by other programming languages? for example, in java s Swing, does the underlying implementation i...
if you only need to provide a global function to export your class to std::cout, you can also import data from std::cin to your own class: -sharpinclude <iostream> using namespace std; class Complex { private: int real, imag; public: Co...
title: https: vjudge.net problem UV...uDebug: https: www.udebug.com UVa 1590 all the uDebug test samples have passed, but the submission is still WA. I don t know what the problem is. I don t know if there is a god who can help me take a look. i...
using namespace Exercise; does not cause ival s redeclaration, but using Exercise::ival; instead leads to why redeclaration is; such as the following code: -sharpinclude <iostream> using namespace std; namespace Exercise { int ivar = 0; ...
this is usually the case when epoch (expressed in microseconds) turns to adulthood. year = epoch 1000 1000 60 60 24 365 but leap years have 366 days, so isn t it inaccurate to divide by 365? I m just going to give you an example. Doe...
recently, I have done a lot of financial projects and found that sometimes there are always some small loopholes, leading to data confusion, such as calculating dividends and credits for users according to certain rules. If the calculation is wrong, the...
macOS 10.13 cannot be executed after installing bochs using brew install bochs. The following error is reported. I have manually installed gtk+,sdl,sdl2 and other dependent packages, and correctly configured the configuration file of bochsrc. What is th...
topic description Address: http: acm.hdu.edu.cn showpro... meaning: little friends save money and do things by putting money in the piggy bank. Unless the piggy bank is broken, you can t get the money out. Weigh the piggy bank in order to know if y...
1. Problem description 1.1 problem description when CPP11 creates a child thread, it uses the class as a parameter. Although only one child thread is created, the copy constructor is called many times, which is counterintuitive, cannot be explained,...
I want to implement two functions, convert between string and wstring, the program runs in linux centos7 gcc version 4.8.5 below is my implementation, if you remove setlocale (LC_ALL, "); from ws2s, the conversion fails. about setlocale this piece is...
topic description 1015 Theory of Virtue and Talent (25 points) Song Dynasty historian Sima Guang has a famous "theory of Virtue and Talent " in "Zi Zhi Tongjian ": "it is the sage of talent and virtue, the fool of virtue and death, the gentleman o...
C3-A7-C5-93-C5-B8-C3-A4-C2-BA-C2-BA-C3-A5-C2-A8-C2-B1-C3-A4-C2-B9-C2-90-C3-A5-C5-B8-C5-BD-C3-A6-C5-BD-E2-80-99-C3-A8-C2-A1-C5-92-C3-A6-C2-A6-C5-93 the decimal system is as follows 195,167,197,147,197,184, 195,164,194,186,194,186, 195,165,194,168,19...
is like the console program of VS CPP. This small black window ...
< H1 > problem description < H1 > while writing transition animation, I inadvertently found that sometimes the page would jam, and the Chrome memory of the viewing task manager suddenly soared. After various exclusions, I found that transform:skew (9...
I used the background-image attribute in sass and referenced several images in the same way. The image storage paths are all under assets images , some are rendered in the foreground static img , some are in base64 format, why? ...
vue.js Code is used to embed nails in h5 pages for micro applications. dd.ready(() => { alert(1) dd.device.geolocation.get({ targetAccuracy: 200, coordinate: 1, withReGeocode: false, useCache:true, onSuccess:(result) =>...
var testData = { 10.1.181.128 : [ { fileCount : 121, fileSize : 0, processResult : , statItem : vs...
the problem of going to float has been checked on the Internet for a long time. I feel so confused. Why the following code clearfix can t float? do you have a boss to explain <!DOCTYPE html> <html lang="en"> <head> <...