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
416
views
1
answer
c++ - Is it dangerous to use placement new on an old object without explicitly calling the destructor first?
I would like to recycle memory for an object rather than deallocating and reconstructing it. Is the following ... a more complex environment. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
466
views
1
answer
c++ - Weird result after assigning 2^31 to a signed and unsigned 32-bit integer variable
As the question title reads, assigning 2^31 to a signed and unsigned 32-bit integer variable gives an unexpected ... linux mint (if that helps) See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
177
views
1
answer
c++ - Problem with functions accepting inner classes of template classes
I have a problem with inner classes in class templates. I have a template class (say: Matrix<T>), and a ... lot in advance for anything helpful! See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
421
views
1
answer
c++ - failing to compile a project, missing io.h file
I fail to compile a C++ project for mobile device with Windows Mobile (Windows CE-based) operating system and ... me in the right direction? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
229
views
1
answer
c++ - Design of std::ifstream class
Those of us who have seen the beauty of STL try to use it as much as possible, and also encourage ... _Elem,class _Traits> class basic_ifstream; See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
573
views
1
answer
c++ - How do I implement a CString hash function for use with std::unordered_map?
I want to declare : std::unordered_map<CString, CString> m_mapMyMap; But when I build I got an error telling ... a hash function for CString? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
389
views
1
answer
c++ - Reproducibility of floating point operation result
Is it possible for an floating-point arithmetic operation to yield different results on different CPUs? By ... from different compilations. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
251
views
1
answer
c++ - Is it possible to store a leading zero in an int?
I have a programming assignment where I need to encrypt a 4 digit int, input by user. I have split the ... just print it within the function. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
307
views
1
answer
c++ - Openssl SSL_CTX_new(SSLv3_method()) returns NULL
Linux version from cat /proc/version Linux version 3.6.11-4.fc16.i686 (mockbuild@bkernel02) (gcc version 4.6 ... certs misc openssl.cnf private See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
181
views
1
answer
c++ - Static members class vs. normal c-like interface
Hey there. After reading here about the Service Locator pattern, it got me thinking wether a class with only static ... Thanks for any help. :) See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
278
views
1
answer
c++ - Construct std::function with a constructor based on template
Is it possible to construct a std::function with the constructor of a type defined by a template argument? For example: ... 't work //... } See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
315
views
1
answer
c++ - Expose a vector as a memoryview using SWIG
I have a header file like: #include <vector> inline std::vector<uint8_t>& vec() { static std::vector< ... <uint8_t> as a Python memoryview? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
221
views
1
answer
c++ - Passing a vector by reference and changing its values in a range-based for loop?
I'm trying to change the values of a vector by doing something similar to the following function: vector<int> ... a range-based for loop? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
218
views
1
answer
c++ - Compiling a MFC app from Visual Studio 2010 to 2012 RC results in LNK2038
My project is compiling and running OK in debug and release modes in VS 2010. Today I tried to compile it with ... how I can solve this problem. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
198
views
1
answer
c++ - Hide label text for Qt tabs without setting text to empty string
I need a QTabWidget with icons only: How can I hide the label text of a tab in Qt? I cannot set the text to ... handle (agree with PS on this). See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
244
views
1
answer
c++ - Evaluation of C expression
int main() { int i = -3, j = 2, k = 0, m; m = ++i || ++j && ++k; printf("%d %d %d ... . What is going on here? What are the intermediate steps? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
147
views
1
answer
c++ - Why can't I use variable of parent class that is template class?
a.h template <typename T> class A { public: int a; } b.h template <typename T> class B : public A<T ... some method? (I fixed some mistakes) See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
303
views
1
answer
c++ - Invalid covariant type with CRTP clonable class
I'm trying to implement a Clonable class with the CRTP. However, I need to have abstract class that have a pure virtual ... A, Clonable<B> { }; See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
219
views
1
answer
c++ - Bug in std::regex?
Here is code : #include <string> #include <regex> #include <iostream> int main() { std::string pattern("[ ... org/bugzilla/show_bug.cgi?id=63497 See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
155
views
1
answer
c++ - Is the compiler allowed leeway in what it considers undefined behavior in a constant expression?
We know that operations that would cause undefined behavior are not core constant expressions(section 5.19 paragraph ... and hence my question. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
1.4k
views
1
answer
c++ - Boost spirit poor performance with Alternative parser
I already asked question about this issue. But since there were no answers i'm asking again now with full compilable ... "Syntax is Ok "; } See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
374
views
1
answer
c++ - Is using const_cast for read-only access to a const object allowed?
In C++ I have a function that only requires read-only access to an array but is mistakenly declared as ... or when accessing the array? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
398
views
1
answer
c++ - How to use/install custom Directshow filter
I have custom compiled directshow filter - filter.DLL - but how to use, or install this filter in system? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
1.1k
views
1
answer
c++ - Error with OpenCV ROI
I am trying to make a program that will identify a pattern by sliding a ROI over an image and comparing the ... is simple thank you in advance! See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
297
views
1
answer
c++ - Array of polymorphic base class objects initialized with child class objects
Sorry for the complicated title. I have something like this: class Base { public: int SomeMember; Base() : ... Is this at all possible? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
359
views
1
answer
c++ - Creating a sub-tuple starting from a std::tuple<some_types...>
Let us suppose that a std::tuple<some_types...> is given. I would like to create a new std::tuple whose ... to discard some of them? Thanks. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
190
views
1
answer
c++ - NPAPI support in Firefox and Chrome actually dropped?
Recently I've found out that Chrome and Firefox are dropping NPAPI plugins support by January 2013. Anyway, reading ... this remain this way? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
154
views
1
answer
c++ - Why don't std::algorithms work directly on containers as well?
Possible Duplicate: STL algorithms taking the whole container rather than .begin(), end() as arg? I have been looking ... I don't know about? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
Page:
« prev
1
...
159
160
161
162
163
164
165
166
167
168
169
...
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] java - How can I create a "soft" broken TCP connection, as if networking hardware had silently disconnected the stream?
[2] [react]有a,b俩组件和一个按钮c,功能上c属于a,但UI显示上需要显示在b里面,如何处理?
[3] js查找下一个字符串
[4] js如何获取div中文字的行数?
[5] java - Ignite application is "Unable to locate Spring NamespaceHandler for XML schema namespace [http://www.springframework.org/schema/util]"
[6] javascript - discord.js (node:9852) UnhandledPromiseRejectionWarning: ReferenceError: msg is not defined
[7] Enable Email/Password Identity Provider on GCP via Terraform
[8] java - Smali toast show code injection error - register v1 type Reference mismatch?
[9] discord.py - I am trying to make a discord bot that can mute and unmute, but i am not having success. Here is my code
[10] 服务器宕机是无响应还是会返回响应的状态码
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
...