how to understand this line of code? static void * a = &a; I saw it on the source code of AFN. static void *AFHTTPRequestSerializerObserverContext = &AFHTTPRequestSerializerObserverContext; The AFURLRequestSerialization.h file is used wh...
is a parser, implementation of a MIDI file. A class, can read the midi and then manipulate the notes or tracks (adjust the length of the force or delete insert the pregnant woman), and then export the midi. No suitable one has been found at present. T...
A simple interface program that accepts username and password, slot function is temporarily empty, compilation can pass, runtime error. passwddialog.h -sharpifndef PASSWDDIALOG_H -sharpdefine PASSWDDIALOG_H -sharpinclude <QDialog> class QLabe...
the original rule is as follows [1-9] {1} [0-9] {3} now I want to rule out the result of 2035. How do I write it? because I m in a hurry, I can t think for myself. Regularity is my weakness. Thank you! ...
when I read a book, I write the following code and type . -sharpinclude<stdio.h> -sharpinclude<stdlib.h> *acb* void butler(void); int main() { printf("a"); a butler(); void butler printf("b"); b return 0; ...
I was bored on the subway. I wanted to write code. I wanted to find a code editor like webstorm. then I searched for a long time, but I couldn t find a suitable one. I just found a codeanywhere, because I haven t experienced it yet, but I still want ...
1. As shown in the figure, class b inherits class a, and the constructor of class b calls the constructor of a. The error of redefinition of formal parameter I appears where the arrow is hit 2.a(i)b ...
when I see the conditional variables section of CPP11, I find that all conditional variables are used in conjunction with locks, but at this time they all use unique_lock instead of lock_guard,. Can you explain that? ...
for example, if there is a set of numbers such as 1, 2, 5, 7, 11, 14, how can Filter come up with two sets of numbers: [1, 2] and [5, 6, 7, 7]? ask for advice ...
in MFC development, how to switch tabControl pages with a button? for example, in C-sharp, you can click the button to switch pages by adding the following statement to the button: this.tabControl1.SelectedIndex = 2; but only these two attributes ...
in MFC development, how to change the picture content of pictureBox by clicking a button? this property in pictureBOX: how to add code to the button to make pictureBOX load another picture when you click the button, thank you! ...
< H1 > include < iostream > < H1 > < H1 > include < time.h > < H1 > < H1 > include < stdlib.h > < H1 > < H1 > include < math.h > < H1 > using namespace std; problem: partition function does not work effectively; typedef double Type; typed...
QDateTime valid = QDateTime::fromString("2018-Apr-5", "yyyy-MMM-d"); use qDebug () output valid to directly say that it is invalid, what is this all about? It is not valid to use an example in the official document: QString s...
CPP11 allows list initialization for all objects, and because the constructor body is assigned, references and const variables must be initialized first, so you must use list initialization, so how is it initialized before CPP11? ...
cut the rope, cut the rope of length n into m segments, and find the maximum value of the length product of each segment I would like to ask myself what is the idea of typing n and m ....
platform: windows10 after I use the start function of QProcess to execute the local (current directory) python file, I can t get standard output from readAllStandardOutput. Code of python file: print "hello,world " Qt Code: -sharpinclude <QP...
this is an algorithm for calculating palindromes less than 100,000 primes written with CPP . -sharpinclude <iostream> using namespace std; int main() { int input_num=100000; int pp_count=0; for(int each=2; each<=input_num; eachPP)...
whether the data transmitted by socket needs to be encrypted ...
I did a question on leetcode, but for the string type, the push_back concatenation character failed the test, but changed to the plus sign to concatenate the character and passed it. topic link my two codes: class Solution { public: vector<...
here is the log at startup 2018-04-17 06:13:59 InitParameterInteraction: parameter interaction: -connect set -> setting -dnsseed=0 2018-04-17 06:13:59 InitParameterInteraction: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistre...
class Models { async setModels(app){ const sequelize = require( sequelize ) const files = await this.readModels() global.Models = {} global.Models._Op = sequelize.Op app.context.Models = {} app.co...
@font-face { font-family: fangzheng; src: url(".. font fangzheng.ttf"); font-weight: normal; font-style: normal; } * { font-family: fangzheng; font-size: 1em; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent;...
when you select a menu, only the parent menu is assigned, and no submenu is assigned. By default, CheckBox cannot achieve this effect . For more information on the logic of https: github.com iview ivie., please see here. ...
Why is there a small box that does not display icons .el-message-box__title::before { font-family:"iconfont" !important; font-size:16px; font-style:normal; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: gray...
Please ask import java.util.Arrays; if you have a question. * Recursive implementation of merge sorting * public class MergeSort { public static void main(String args[]){ int a[] = {0,4,23,1,5,76,34,2,13,79}; mergeSort(a,0,a.length...