A sequence type defined as part of the Standard Template Library.
-1
votes
4answers
30 views
Getting the size in bytes of a vector [duplicate]
Sorry for this maybe simple and stupid question but I couldn't find it anywhere.
I just don't know how to get the size in bytes of a std::vector.
std::vector<int>MyVector;
/* This will ...
0
votes
3answers
219 views
std::map<int, int> vs. vector of vector
I need a container to store a value (int) according to two attributes, source (int) and destination (int) i.e. when a source sends something to a destination, I need to store it as an element in a ...
-2
votes
3answers
75 views
Can not insert own structure in standard vector but string can
I made simple structure:
struct sToken
{
std::string token;
unsigned int lineNb;
};
I want to insert this structure in standard vector using push_back() method, but when I do this:
...
-6
votes
1answer
56 views
syntax for creating a vector in c++ [closed]
Can someone please elaborate on the meaning of the following line of code in C++?
std::vector<Bone<float> *> bones;
I think it is creating a vector called bones, which is comprised of ...
0
votes
1answer
50 views
How to get a pointer to last inserted element of a std::vector?
I came up with the following snipped but it looks quite hacky.
vector<int> collection;
collection.push_back(42);
int *pointer = &(*(collection.end()--));
Is there an easy way to get a ...
0
votes
2answers
33 views
C++ How to iterate over a vector defined as a super class, but call sub class methods?
I have a Java background and I am trying to understand polymorphism in C++. Specifically, how to iterate over a series of subclasses in a std vector defined by their super class, in order to call a ...
3
votes
1answer
107 views
BadPtr with vector<std::string> iterator in template function
I have a function that parses a .csv file and tokenizes each line using a "," as the delimiter. I tokenize it into a vector. I then iterate over that vector and convert each string to a number using a ...
1
vote
1answer
55 views
C++: Can I use a vector with placement new?
I'm working on a bit of a thought experiment here -- I'm trying to actually make my life easier here. I'm working with a data structure that, among other things, contains a couple of arrays of ...
0
votes
1answer
51 views
std::remove_if/find_if: Double free or corruption
I have the following std::map defined:
//The map holding the list of registered services per partition key.
std::map<SRServicePartitionKey, std::vector<EndPointAddr*>* > mServiceMap;
...
0
votes
2answers
65 views
STL Vector Swap Structure (C++)
What is the difference between
someVector.clear();
std::vector<int> ().swap(someVector);
and
someVector.clear();
std::vector<int> (someVector).swap(someVector);
Or do they accomplish ...
8
votes
4answers
375 views
a small issue with std::vector and changing the collection while looping through it
This loop changes the iterators while running:
std::vector<int> c;
c.push_back(1);
c.push_back(2);
std::vector<int>::iterator iter = c.begin();
std::vector<int>::iterator ...
2
votes
0answers
72 views
Remove elements (and change size) of std::vector without affecting allocated memory
I'm using code such as the following:
const int MY_SIZE = 100000;
std::vector<double> v;
v.reserve(MY_SIZE);
// add no more than MY_SIZE elements to the vector
f(v);
v.clear();
// again, ...
1
vote
2answers
86 views
Strange behavior when including <vector>
I see some very strange behavior when I include the standard vector library. Can anyone tell me what is causing these failures? Whose toes am I stepping on and is there a general case of this bug that ...
2
votes
5answers
83 views
std::remove_if: Removing all occurences of a pointer from std::vector
I have an std::vector instance as defined in the following line:
std::vector< std::pair<EndPointAddr*, EndPointAddr*>* > mServiceSubscriptionsList;
The first item in the underlying ...
1
vote
4answers
35 views
std::vector pushback throws EXC_BAD_ACCESS when used inside a C++ static method
I have a class Foo with a static factory method - Foo::createOne - that creates an instance and puts some data into a private member variable of type std:vector. When I call Foo::createOne, my ...
