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
0
votes
1 answer
Pushing back a vector gives absurd results (C++)
Hello so I've seen some other posts about it but they never seem to solve my issue, or I just can't understand it with my peanut sized brain.
If I input something, and push it back to the vector, it would always have some stupidly absurd…
Blueberry Tech
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0
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1 answer
Vector push back a derived smart pointer into a vector of smart pointers of a base abstract class
Suppose I have the following base abstract classes
class Worker {
public:
struct Details {
std::string name;
};
public:
virtual void work() = 0;
};
class Manager {
public:
virtual ~Manager() =…
Robbie
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1 answer
Why push_back() will change the previous value?
I want to build a series of paths with serial numbers through a for loop, so I use a series of strcpy and strcat (I know there is a string method, but please forgive me, my technique is really poor). But after the loop, I get a series of the same…
Ahri
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2 answers
c++ vector pushback slice of another vector in a concise way
I mean to build a vector of M N-sized-vectors, i.e., with K=M*N total elements, from a K-sized vector with a linear arrangement of the same set of values.
Moreover, I would do that in a class constructor, although I guess that is irrelevant.
My code…
sancho.s ReinstateMonicaCellio
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1 answer
Using push_back() on a vector>
So I have a class Board header as followed:
class Board
{
std::vector> _board;
uint _rows;
uint _cols;
public:
Board();
}
And I have this default constructor:
Board::Board()
{
…
Jewgah
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- 8
0
votes
1 answer
vector.push_back not working on template class C++
So I made that code, it get a in file for reading, read it into a temporary variable of a object then push_back it to a vector as container.
But... its not working, after the last one, all variables get the information of the last one object read in…
Bernardo Emery
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How to default initialize a vector element?
Let's say I have a class X that does not have any type of constructor unless an implicit default constructor:
class X
{
public:
int value;
X(void) = default;
X(int) = delete;
X(const X&) = delete;
X(X&&) =…
INEEDANSWERS
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0
votes
1 answer
C++ vector of class objects and dynamic memory allocation
This is a simplified version of what I want to do, it crushes when push_back is called, specifically when the destructor is called. If I delete the body of the destructor it works, but I want to be sure that it is deleted. Instead of calloc/free I…
SVS
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votes
1 answer
C++ Differences Between Pushbacks
Below is code that has different kinds of push backs. By that, I mean push backs with different inputs. An example is accounts.push_back(five). I am not sure why the constructor printouts are different for each kind of push back. Not only are the…
Pistachio
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2 answers
I'm getting a long, weird error when I pushback a class object to a initialized class vector
I am new to object oriented programming. I am trying to make a game called Hex. I use a static vector of Hex objects to hold active games (there can be more then one active game). But whenever I try to pushback a new game to Hex vector, I get this…
gokbeykeskin
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0
votes
3 answers
Dealing 5 cards per player using vectors
I am trying to push_back 5 elements from vector deck_of_cards to vector player1_hand and pop_back those elements to reduce the deck_of_cards, then the next 5 elements from vector deck_of_cards for vector player2_hand, etc. I can push_back with the…
Ryan Dunnion
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0
votes
1 answer
C++ Fizzbuzz Leetcode vector push_back() replacing all previous elements
I am having an issue where the C++ push_back() function is replacing all previous elements in a vector. Code that works is given
class Solution {
public:
vector fizzBuzz(int n) {
vector ans;
for(int i=1;i<=n;i++)
…
Nimitz
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0
votes
1 answer
How to push data to a vector from a file c++
I have some table of data in a '.csv' file.I want to push those data from that file to a vector.I tried push_back.But it hasn't worked for me.I'm actually a beginner to c++.Could someone help me to sort this out?
struct contacts {
string name;
…
SeektheFreak
- 55
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0
votes
2 answers
push_back iterator in vector?
I tried to store the number 1,4,7...97 into a vector.
if I use std::out << i; the for loop is working.
but the push_back gives an error:
base of member reference is a function perhaps you meant to call it with no arguments.
i googled it and couldn't…
TR3478
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0
votes
1 answer
How .push_back works in C++?
I have a question in my mind. Lets say I have two vectors called vector1 and vector2.
vector vector1{1,2};
vector vector2{3,4};
Now I want to create a 2-D vector called vector_2d and assign these two vectors into my new 2-D vector using…
efe373
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