I have a code snippet like this:
int* array = new int[size];
std::reverse_iterator<int*> it2 = ... // arbitrary in array
How can i compute the distance between last and it2
? I tried this, but it gives back zero:
std::distance(std::reverse_iterator<int*>(array + size), it2);
Your approach to computing the distance looks correct to me. Certainly, this prints 10
when using gcc or clang :
#include <algorithm>
#include <iostream>
#include <iterator>
int main()
{
const int size = 20;
int* array = new int[size];
std::cout << "distance="
<< std::distance(std::reverse_iterator<int*>(array + 20),
std::reverse_iterator<int*>(array + 10))
<< '\n';
delete[] array;
}
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