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
1 answer
Initializing multi-dimensional std::vector without knowing dimensions in advance
Context: I have a class, E (think of it as an organism) and a struct, H (a single cell within the organism). The goal is to estimate some characterizing parameters of E. H has some properties that are stored in multi-dimensional matrices. But, the…
kei2e
- 13
- 3
1
vote
1 answer
Vector element Destructor not called with reserve
I have this class:
class aa
{
public:
int i = 0;
~aa(){
std::cout << "killin in the name of" << std::endl;
}
};
And I want to make a vector of this class. First I thought o reserving the needed size:
int main()
{
std::vector…
Ivan
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1
vote
2 answers
Why this code does allow to push_back unique_ptr do vector?
so I thought adding unique to vector shouldn't work.
Why does it work for the below code?
Is it cause by not setting copy ctor as "deleted"??
#include
#include
#include
class Test
{
public:
int i =…
wlodek14a
- 63
- 4
1
vote
1 answer
Mashed-up data in string vector
I've been trying to fix this for ages,
I've got a program that takes in a random word from a supplied dictionary (txt file),
and then adds this word to a vector of strings.
The randomWord() function works as intended, but the getWords() seems to…
offshore
- 11
- 3
1
vote
1 answer
error: no matching function for call to vector::push_back
I'm new to C++ and am trying to use pushback function to store food orders in a vector object so that the food orders can be compiled and repeated back later. But I get the error: no matching function for call to…
ahmadalibin
- 133
- 8
1
vote
1 answer
Why can we push_back a subvector defined only with range?
Say I have a vector a = {1,2,3,4,5,6} and vector>b . Why can we write
b.push_back({a.begin() + 1, a.begin() + 4});
and end up with b = {{2345}}? I simplified this from a portion of code, so if this specific bunch of code doesn't…
Blue
- 29
- 2
1
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1 answer
segmentation fault when push_back or erase on std::list
Some pieces of my code crash randomly when call push_back or erase on std::list, the code is in a long time runing service . I removed the unimportant part and just keep the most relevant.
std::list pendingSync;
size_t…
zhuo.quan
- 63
- 7
1
vote
1 answer
Confusion on push_back interaction with pair
I have no error message instead I only have unexpected behavior.
double get_optimal_value(int capacity, vector weights, vector values) {
int n = weights.size();
vector> valuePerWeight(n);
pair x;
…
ConfusionIsConstant
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- 2
1
vote
1 answer
push_back in vector showing error
I have inserted a string, i want each character to be separately be inserted in the vector string. On using the push_back function i get the following error:
error: no matching function for call to 'std::vector…
ragini bhayana
- 11
- 3
1
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1 answer
Can I implement a push_back method for linked list in that way?
I've already been doing push_back methods for link lists like that:
#include
using namespace std;
class Node{
public:
int data;
Node* next;
Node(int data,
Node* next = nullptr){
this->data = data;
this->next…
dimm
- 51
- 1
- 7
1
vote
1 answer
I can't push_back a unique_ptr after passed it into a function
I'm working on my little project about pointers, I ran into problem when I was trying to push a unique_ptr to a derived class, to a vector of unique_ptr to base class. It keeps saying that I'm "attempting to reference to a deleted function". I tried…
Duc Nguyen
- 11
- 1
1
vote
1 answer
clang tidy complains about push_back into vector in a loop
Here's my code(works fine), and the complaint of IDE:
I tried setting vector size with vector result(tmp.size()); but after that, result will contain tmp.size() amount of empty strings in the front, and I don't wan't to use insert.
Is…
gone
- 823
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1
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1 answer
How can I add an item to the structure with vector elements?
I would like to add the peak position of a vector and the peak number but I can't find a way to add the elements and then return it, or write it on console.
#include
#include
using namespace std;
struct PeakData {
…
Pilv
- 61
- 7
1
vote
1 answer
How to create an emplace_back method?
I´m creating a custom ArrayList/Vector class and I´m having troubles creating an emplace_back function. How can I create arguments that are the same as the constructor of the "value_type class" of the ArrayList ?
Pablo Arkadiusz
- 57
- 6
1
vote
2 answers
Pushing a string to a private member vector
I have a std::vector tileSet_ as a member variable of a class. In the constructor of said class I call the function
void MapWindow::shuffleTiles() const
{
std::vector> tileAmounts = {
{"a", 2},…
sesodesa
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