Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Login
Remember
Register
Ask
Q&A
All Activity
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Categories
All categories
Topic[话题] (13)
Life[生活] (4)
Technique[技术] (2.1m)
Idea[创意] (3)
Jobs[工作] (2)
Others[杂七杂八] (18)
Code Example[编程示例] (0)
Recent questions tagged C++
0
votes
458
views
1
answer
c++ - Fastest way to Convert String to Binary?
I want to convert a string, using the string class - to Binary. What is the fast way to do this character by ... { myString = "Hello World"; } See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
262
views
1
answer
c++ - How can I extend a lexical cast to support enumerated types?
I have the following function that will convert a string into a numeric data type: template <typename T> bool ... for everything else. Thank you See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
627
views
1
answer
c++ - OpenCV warpperspective
For some reason whenever I use OpenCV's warpPerspective() function, the final warped image does not contain everything ... to fix this? Thanks See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
287
views
1
answer
c++ - How to block running two instances of the same program?
I need to make sure that user can run only one instance of my program at a time. Which means, that I have ... Linux/Unix is a priority for me. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
435
views
1
answer
c++ - Stepping into Qt sources in Qt Creator (in Ubuntu Linux)
I'm using Qt Creator in Ubuntu. It's installed from the repositories but as it is now, there is no way to ... debugging. How can I enable that? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
403
views
1
answer
c++ - With a private modifier, why can the member in other objects be accessed directly?
I have the following code: class A { private: int x; public: A() { x = 90; } A(A a1, A a2) { a1 ... a1 and a2 can access private data member x? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
422
views
1
answer
c++ - Fastest inline-assembly spinlock
I'm writing a multithreaded application in c++, where performance is critical. I need to use a lot of ... spin_unlock: ;unlocking code. } See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
644
views
1
answer
c++ - Reading and writing a std::vector into a file correctly
That is the point. How to write and read binary files with std::vector inside them? I was thinking something ... how to perform the operation? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
237
views
1
answer
c++ - "Step over" when debugging multithreaded programs in Visual Studio
One thing that annoys me when debugging programs in Visual Studio (2005 in my case) is that when I use "step over" ... to be useful for me :) See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
639
views
1
answer
c++ - Replace multiple spaces with one space in a string
How would I do something in c++ similar to the following code: //Lang: Java string.replaceAll(" ", " "); ... in a string with a single space. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
310
views
1
answer
c++ - How to call an external program with parameters?
I would like to call a windows program within my code with parameters determined within the code itself. I'm not ... ASM, C#, Python, etc). See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
317
views
1
answer
c++ - Win32: Bring a window to top
I have a Windows program which has two 2 windows in it: hwnd (main interface) hwnd2 (toplevel window, ... PostMessage (rather than SendMessage). See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
433
views
1
answer
c++ - How are the __cplusplus directive defined in various compilers?
My compiler expands it to 199711L. What does that mean? I read that __cplusplus > 199711L signifies C++11. What ... and what does it signify? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
439
views
1
answer
c++ - std::mutex performance compared to win32 CRITICAL_SECTION
how does the performance of std::mutex compared to CRITICAL_SECTION? is it on par? I need lightweight synchronization ... than std::mutex ? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
274
views
1
answer
c++ - Making a template parameter a friend?
Example: template<class T> class Base { public: Base(); friend class T; }; Now this doesn't work... ... actually can do something like this. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
449
views
1
answer
c++ - Is it possible to pass derived classes by reference to a function taking base class as a parameter
Say we have an abstract base class IBase with pure virtual methods (an interface). Then we derive CFoo, CFoo2 from ... is: Foo(IBase &input); See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
374
views
1
answer
c++ - Android ndk std::to_string support
I'm using android NDK r9d and toolchain 4.8 but I'm not able to use std::to_string function, compiler throws this ... -std=c++11 with no luck. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
380
views
1
answer
c++ - Does delete work with pointers to base class?
Do you have to pass delete the same pointer that was returned by new, or can you pass it a pointer to one ... to everyone who pointed it out. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
328
views
1
answer
c++ - shared_ptr<> is to weak_ptr<> as unique_ptr<> is to... what?
In C++11, you can use a shared_ptr<> to establish an ownership relation with an object or variable and weak_ptr<> ... available in e.g. Boost? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
314
views
1
answer
c++ - Compile c++14-code with g++
I'm using g++ 4.8.4 on Ubuntu 14.04 LTS. When trying to compile with '-std=c++14', I get this ... retrieve the latest version, is that correct? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
560
views
1
answer
c++ - strdup or _strdup?
When I use strdup in Microsoft Visual C++, it warns me: warning C4996: 'strdup': The POSIX name for this item ... include <string.h> in my code. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
521
views
1
answer
c++ - QTcpSocket: reading and writing
I know some similar questions may have been asked already, but the answers to those I found covered very specific ... tips are welcome. Thanks! See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
473
views
1
answer
c++ - process video stream from memory buffer
I need to parse a video stream (mpeg ts) from proprietary network protocol (which I already know how to do) ... AVFrames to Mat if needed. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
367
views
1
answer
c++ - access private member using template trick
From a blog post Access to private members: Safer nastiness by Johannes Schaub - litb: template<typename Tag, ... 's due to ADL mechanism See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
530
views
1
answer
c++ - How to take screenshot in OpenGL
How to take a screenshot of an OpenGL window in C++ and save it to file. I found the glReadPixels() ... not difficult, write code, please. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
550
views
1
answer
c++ - How to simulate a mouse movement
How can I simulate a mouse event causing the pointer to move 500 pixels to the left, then click using C++. How would I do something like this? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
288
views
1
answer
c++ - Difference between A* pA = new A; and A* pA = new A();
in C++, what is the exact difference between both following dynamic object creations : A* pA = new A ... difference about performance... Thanks See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
594
views
1
answer
c++ - Makefile: How to correctly include header file and its directory?
I have the following makefile: CC=g++ INC_DIR = ../StdCUtil CFLAGS=-c -Wall -I$(INC_DIR) DEPS = split.h ... the makefile? How to correct this? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
Page:
« prev
1
...
309
310
311
312
313
314
315
316
317
318
319
...
568
next »
Ask a question:
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question
Just Browsing Browsing
[1] vscode配置prettier+eslint+vetur,导致启用eslint的代码检测一直报错,该如何解决?
[2] Docker + Django + Vue + Nginx configuration not reading CSS or JS files (Ioading wrong MIME type)
[3] python - got an error while getting messages from a public channel using Telethon
[4] Laravel 8 API Subdomain Unreachable
[5] React如何做表单渲染优化
[6] ios - Does the flag kSecAttrAccessControl has an effect on the public key when generating the key pair using SecKeyGeneratePair?
[7] vue.js - textarea does not accept the correct size after display none
[8] Locating partial link text with python selenium in chrome headless mode
[9] dockerfile - How to pass args to docker run for python?
[10] 关于数组转换对象的问题
2.1m
questions
2.1m
answers
60
comments
56.9k
users
Most popular tags
javascript
python
c#
java
How
android
c++
php
ios
html
sql
r
c
node.js
.net
iphone
asp.net
css
reactjs
jquery
ruby
What
Android
objective
mysql
linux
Is
git
Python
windows
Why
regex
angular
swift
amazon
excel
algorithm
macos
Java
visual
how
bash
Can
multithreading
PHP
Using
scala
angularjs
typescript
apache
spring
performance
postgresql
database
flutter
json
rust
arrays
C#
dart
vba
django
wpf
xml
vue.js
In
go
Get
google
jQuery
xcode
jsf
http
Google
mongodb
string
shell
oop
powershell
SQL
C++
security
assembly
docker
Javascript
Android:
Does
haskell
Convert
azure
debugging
delphi
vb.net
Spring
datetime
pandas
oracle
math
Django
联盟问答网站-Union QA website
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
广告位招租
...