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
389
views
1
answer
c++ - array decay to pointer and overload resolution
I want to be able to differentiate array from pointers in overload resolution : class string { public: string(const ... if a better way exist 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++ - How to convert a byte array into double in C?
I've got a byte array containing 8 bytes and would like to convert and use them as a double precision binary ... tell me how to convert it? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
266
views
1
answer
c++ - Undocumented GCC Extension: VLA in struct
While reading the Clang documentation, I came across the following intriguing tidbit: [1] clang does not support the ... . Thanks for the help! See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
277
views
1
answer
c++ - How do you mark a struct template as friend?
I have code like this: template <typename T, typename U> struct MyStruct { T aType; U anotherType; }; ... give friendship to the template ? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
302
views
1
answer
c++ - Can I use the result of a C++17 captureless lambda constexpr conversion operator as a function pointer template non-type argument?
While answering How do I write a lambda expression that looks like a method?, I tried to turn a captureless lambda ... question is, who's right? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
147
views
1
answer
c++ - Code runs 6 times slower with 2 threads than with 1
Original Problem: So I have written some code to experiment with threads and do some testing. The code should create ... 2 Threads: 0.35 seconds See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
224
views
1
answer
c++ - What does C4250 VC++ warning mean?
What does C4250 Visual C+ warning mean in practical terms? I've read the linked MSDN page, but I still don't ... arise if I ignore the warning? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
350
views
1
answer
c++ - Template constructor in a class template - how to explicitly specify template argument for the 2nd parameter?
Template constructor in a class template - how to explicitly specify template argument for the 2nd parameter? compile ... again return 0; } See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
114
views
1
answer
c++ - Why does the main function work with no return value?
This question is out of curiosity; while writing a main for a test program, I returned nothing from main(no ... the same for main function? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
130
views
1
answer
c++ - Pointers to members representations
I'm trying to make some callbacks from member functions and everything was ok until I tried to use a ... is the difference between them? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
141
views
1
answer
c++ - Calling constructor with braces
Simple question about C++11 syntaxis. There is a sample code (reduced one from source) struct Wanderer { explicit ... 's the thing is this? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
344
views
1
answer
c++ - Does calling a destructor explicitly destroy an object completely?
If I call a destructor explicitly ( myObject.~Object() ) does this assure me that the object will be ... as an important optimization. Thanks! See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
208
views
1
answer
c++ - How to get the address of the std::vector buffer start most elegantly?
I want to use std::vector for dynamically allocating memory. The scenario is: int neededLength = computeLength(); / ... way to achieve the same? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
428
views
1
answer
c++ - Add elements to a vector during range-based loop c++11
I have used the new range-based for loop provided by C++11 standard and I came up with the following ... come up with a segmentation fault. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
324
views
1
answer
c++ - Win32 - read from stdin with timeout
I'm trying to do something which I think should be simple: do a blocking read from standard input, but timing ... for the event with a timeout. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
197
views
1
answer
c++ - How can I find the size of all files located inside a folder?
Is there any API in c++ for getting the size of a specified folder? If not, how can I get the ... folder including all subfolders and files? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
393
views
1
answer
c++ - Does GDI+ have standard image encoder CLSIDs?
The GDI+ Image::Save method requires a CLSID parameter to specify the encoder to use. The documentation points ... Microsoft's include files. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
236
views
1
answer
c++ - Why does (i|o)fstream take a const char* parameter for a file name?
Why does the constructor and open method of the std::(i|o)fstream classes take the name of a file as a ... they wrote a class to replace. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
134
views
1
answer
c++ - Why the sequence-operation algorithms predicates are passed by copy?
I'm wondering why functors are passed by copy to the algorithm functions: template <typename T> struct summatory ... the pass-by-reference one? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
206
views
1
answer
c++ - Why isn't operator overloading for pointers allowed to work?
As per the comment under this answer, references were introduced primarily to support operator overloading which quotes ... used in its place. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
106
views
1
answer
c++ - i++ less efficient than ++i, how to show this?
I am trying to show by example that the prefix increment is more efficient than the postfix increment. In ... better example to show this? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
154
views
1
answer
c++ - Different sizeof results
Why does n not equal to 8 in the following function? void foo(char cvalue[8]) { int n = sizeof (cvalue); } But ... ]; int n = sizeof (cvalue); } See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
505
views
1
answer
c++ - Forward Declaration of variables/classes in std namespace
I usually use forward declaration predominantly, if I have a class that does not need complete definition in .hpp ... does it have side effects? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
246
views
1
answer
c++ - Are dollar-signs allowed in identifiers in C++03?
What does the C++ standard say about using dollar signs in identifiers, such as Hello$World? Are they legal? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
247
views
1
answer
c++ - Lambdas and capture by reference local variables : Accessing after the scope
I am passing my local-variables by reference to two lambda. I call these lambdas outside of the function scope. Is ... would expect output 2 1. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
166
views
1
answer
c++ - Get path to My Documents
From Visual C++, how do I get the path to the current user's My Documents folder? Edit: I have this: TCHAR ... thoughts as to why this might be? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
375
views
1
answer
c++ - Set the digits after decimal point
I have a float number for example 12.12123 Is there a function which would display only number with 2 digits after ... it does not seem to help. 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++ - Why do I need to include both the iostream and fstream headers to open a file
#include <iostream> #include <fstream> using namespace std; int main () { ofstream myfile; myfile.open ("test. ... needed to make it compile? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
Page:
« prev
1
...
274
275
276
277
278
279
280
281
282
283
284
...
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] react中dispatch action修改redux store之后,useselector无法获取最新的store
[2] python proto文件 引入报错,求指教
[3] 代码如下,不知道如何写递归
[4] chrome插件window对象chrome.extension.getBackgroundPage() underfind
[5] reactjs - Put the value of a key in the "value" field of an input when mapping through multiple inputs
[6] 将分类下的叶子类目放到同一个数组中变成一个二维数组要怎么实现?
[7] Mongodb聚合管道如何限制关联查询的子集合的字段?
[8] 全局有umi,在项目下可以查找到,然后接着又显示没有umi模块
[9] reactjs - How can I add gap between the bars in Recharts Bar chart (vertical, stacked)
[10] [前端求助] ios 下使用 UC 浏览器 video 标签播放问题?
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
...