What are some examples of iterator adaptors in C++11?

Can you explain what iterator adaptors are in C++11?

Iterator adaptors are tools that allow you to modify the behavior of iterators in C++11, enabling more flexible data manipulation.

What are some common examples of iterator adaptors?

Common examples include std::transform, std::filter, and std::reverse, which can change how data is accessed or processed.

How do I use std::transform with iterator adaptors?

You can use std::transform to apply a function to a range of elements, transforming them into a new range. For example, std::transform(begin, end, output, func);.

Can you give me a code example using std::transform?

Sure! Here's a simple example:

#include <vector>
#include <algorithm>
#include <iostream>

int main() {
    std::vector<int> vec = {1, 2, 3, 4};
    std::vector<int> result;
    std::transform(vec.begin(), vec.end(), std::back_inserter(result), [](int x) { return x * 2; });
    for (int n : result) std::cout << n << ' '; // Outputs: 2 4 6 8
}