All Questions
Tagged with constructor c++11
783
questions
0
votes
1
answer
86
views
Is this a standard conforming way for selective constructor "inheritance"?
In trying to inherit constructors selectively (ie just some of them) I found a way that seem to work with GCC:
#include <string>
#include <iostream>
struct B
{
B()
{
...
- 14.3k
0
votes
2
answers
36
views
Issue calling a variadic template constructor
The following code doesn't work, it fails because it cannot find a constructor with a <int, bool> signature.
I know can't specify explicitely the template parameters in the case of a constructor....
- 9,252
1
vote
1
answer
25
views
Got "expected type specifier" error while instantiating my property
My goal is to create nullable value which takes both a default value function and a key to retrieve a potential customization of the value from the flash storage.
But trying to instantiate it as a ...
- 13.5k
1
vote
1
answer
299
views
How to understand implicitly declared in the right way?
As per the document, which says that the constructor, deconstructor and asignment operator of std::array are implicitly declared. How to understand that?
I fully understand default declared functions(...
- 3,424
-1
votes
1
answer
105
views
template specialization of unique_ptr generating member function
I am trying to make comm class with template variable.
My colleague ask me to use std::unique_ptr for memory management.
But I think I failed to implement polymorphysm.
I wrote code as the following.
...
-2
votes
1
answer
69
views
C++ variable initializes even though the copy constructor is deleted
The code below works unexpectedly!
class CameraBuffer;
class CameraBufferAccessor{
friend CameraBuffer;
private:
CameraBufferAccessor(const int &data, const int &mutex);
public:
...
- 1
0
votes
1
answer
39
views
The compiler creates a constructor of N args when I have N public member variables and no private ones. What is happening here?
The following code compiles and runs as expected, unless I uncomment one of the two commented out lines that I have labelled with "prevents compilation":
#include <string>
#include <...
- 1,719
0
votes
0
answers
56
views
How do I connect three of these functions without using the constructor delegation method?
#include <iostream>
#include <string>
using namespace std;
class Instructor{
private:
string first_name;
string last_name;
string office_number;
public:
...
- 1
0
votes
0
answers
541
views
[COVERITY][C++] Non-static class member "A._M_elems" is not initialized in this constructor nor in any functions that it calls
I am having an issue with a coverity warning that occurs in the constructor of my C++11 class.
In the class Model, I define the type Trajectory and declare it privately.
template<unsigned int T, ...
0
votes
1
answer
137
views
C++11: passing a temp object to a ctor, doesn't call move constructor, why? [duplicate]
I was trying to see why move constructor is called, as below:
#include<iostream>
#include<utility>
using namespace std;
struct M{
M(){cout<<"ctor\n";}
M(const M&m){...
- 8,007
0
votes
1
answer
322
views
Provide definition of constructor template outside a class template [duplicate]
Consider the following class template with a constructor template:
template <class T>
class C{
public:
T val_;
std::string str_;
template <typename S>
C(const S&...
- 25
0
votes
1
answer
54
views
copy constructor called in the constructor
If I have the classes:
#include <cstddef>
#include "connection.h"
class Request{
private:
size_t sz;
char *data;
Connection *connection;
public:
Request(const char* d, ...
- 61
0
votes
4
answers
731
views
C++ Child Class Change Parent Class's Constructor
Modified the question a bit, thanks for your help on this!
Is there a way to change Parent's constructor(e.g. change the value of protected field) when initialize the Child class.
For example, I have ...
- 23
-1
votes
2
answers
756
views
Is a default constructor called on a class member variable if I am explicitly constructing it in the class constructor in c++?
So if I have something like the following:
class MyClass{
public:
MyClass(){
// do other stuff
*oc = OtherClass(params);
}
private:
OtherClass* ...
user16541120
5
votes
1
answer
194
views
Is it meaningful\suitable to mark the derived class as movable while the base class is non-moveable?
Is it meaningful\suitable to mark the derived class as movable while the base class is non-moveable?
I know this kind of inconsistency is legal in C++, but is it meaningful\suitable in practise?
In ...
- 3,424