is the action of adding an element at the end of a container.
push-back is the action of adding an element at the end of a container.
Questions tagged [push-back]
420 questions
1
vote
6 answers
How to keep an iterator dereferenceable when its vector is added to?
Let's say I have this code:
std::vector objects;
std::vector::iterator iter;
for (iter = objects.begin(); iter != objects.end(); iter++) {
if (condition)
objects.push_back(new Object());
}
However, when push_back…
Sk8torchic
- 11
- 1
1
vote
3 answers
C++ crashing:push_back on nested vectors
#include
#include
using namespace std;
struct Neighbor
{
int index;
int weight;
Neighbor(int, int);
};
Neighbor::Neighbor(int index, int weight)
{
Neighbor::index = index;
Neighbor::weight = weight;
}
void…
Ritoban Roy Chowdhury
- 79
- 2
- 9
1
vote
1 answer
Android Fatal signal 7 (SIGBUS), code 1, fault addr 0xb8509ce1 in tid 32190 (com.example)
In my app, I use of C++ code to complie.There is a function in xxx.cpp like this:
void Cache::addRequest(SREQUEST req)
{
m_reqs.push_back(req);
}
When my app call this function, it's throw the run-time error:
Fatal signal 7 (SIGBUS), code 1,…
user1010439
- 43
- 2
- 6
1
vote
2 answers
c++ Push_back type with multiple
I have the following C++ Code...
struct myType
{
int SID;
int IID;
std::string myString;
};
std::vector _type;
The problem is when i do this...
for (int x = 1; x < 82432; x++)
{
_type.push_back(myType());
}
it give me…
user3014330
- 21
- 5
1
vote
2 answers
vector destroys objects but does not construct their replacements?
#include
#include
using namespace std;
class cMember
{
public:
int id;
cMember();
~cMember();
};
cMember::cMember()
{
cout<<"member constructor\n";
}
cMember::~cMember()
{
cout<<"member…
BDO
- 13
- 4
1
vote
6 answers
c++ garbage values in vector of pointer
When I do:
for(i=0; i
user3794176
- 75
- 1
- 9
1
vote
1 answer
deque empty after push_back a deque
I tried to read lines from file, push every 5 lines into one deque dq, then push dq into a deque ques. The dq successively got 5 lines, but after push_back the dq into ques, the debuger shows that one empty queue was inserted into ques, shown below…
X. L
- 601
- 1
- 7
- 11
1
vote
2 answers
push_back private vectors with 2 methods, one isn't working
I have a class with a private vector of doubles.
To access or modify these values, at first I used methods such as
void classA::pushVector(double i)
{
this->vector.push_back(i);
}
double classA::getVector(int i)
{
return vector[i];
}
This worked…
jmclem
- 99
- 1
- 1
- 5
1
vote
1 answer
Using the same vector without the resize() part
I have a question about std::vector -
vector vec(1,0);
while(//something_1)
{
while(//something_2)
{
...
vec.pushback(var)
...
}
process(vec.size()); //every iteration- different size
vec.clear();
…
user1673206
- 1,671
- 1
- 23
- 43
1
vote
3 answers
C++ possible constructor error violation writing location
I have added these functions to my code, and my program started crashing randomly showing
Unhandled exception at 0x6C7B52E7 (SDL2.dll) in SDL_2.exe: 0xC0000005: Access violation writing location 0xFF00000C. Debugger shows at completely random…
gavriktonio
- 19
- 4
1
vote
2 answers
c++ Crossover genetic algorithm push_back vector overwrites the old one
I have problem with my code. I'm trying to do a crossover of 4 parents. The problem is the push_back vector keeps overwriting the upper one if there is the same value in the vector.
For example,
parent 1 = 101
parent 2 = 200
parent 3 = 101
parent 4…
Alphs Alphonse
- 13
- 3
1
vote
3 answers
ASP form losing file attachments on postback
I have an aspx form that contains a series of user inputs and then a submit button that packages that info and sends an email with the parsed data and any attachments.
I'm using an asp:fileupload for the user to attach files to the email, and on the…
Dylan Schmidt
- 61
- 12
1
vote
2 answers
push_back implementation internal
In std::vectors push_back implemetation, when size()==capacity() , the part, that it allocates two times more place and copy the elements of old , I want to ask, the most effective way of that copying?
Seno Alvrtsyan
- 241
- 1
- 11
1
vote
0 answers
Add value to row of multidimensional vector c++ with push_back
I want to push_back only one column in a multidimensional vector. How do I only access and push_back the vector at a specific row with an int?
typedef vector Row;
typedef vector Matrix;
int N = 3;
Matrix restricted(N+1, Row(0));
And then…
user3377716
1
vote
1 answer
C++ vector.push_back adds objects twice when adding an object once
I am creating a DirectX program which needs to be able to dynamically add objects into a list (or vector) for use the render function. I need to be able to access these objects through the "[]" operator which is the reason i am using vectors instead…
Conner Tenn
- 63
- 3
- 8