How do I remove duplicates with std::forward_list?

In C++, you can efficiently remove duplicates from a `std::forward_list` by using the `unique` member function, which removes consecutive duplicate elements. However, since `std::forward_list` does not have a sort operation, it's important to sort the list first before calling `unique`. Here's how you can do it:

#include #include #include int main() { // Create a forward_list with duplicate elements std::forward_list flist = {1, 2, 2, 3, 4, 4, 4, 5}; // Sort the forward_list flist.sort(); // Remove duplicate elements flist.unique(); // Print the modified forward_list for (const auto& elem : flist) { std::cout << elem << " "; } return 0; }

C++ forward_list remove duplicates unique data structures

Related Questions

How do I avoid rehashing overhead with std::set in multithreaded code?

How do I find elements with custom comparators with std::set for embedded targets?

How do I erase elements while iterating with std::set for embedded targets?

How do I provide stable iteration order with std::unordered_map for large datasets?

How do I reserve capacity ahead of time with std::unordered_map for large datasets?

How do I erase elements while iterating with std::unordered_map in multithreaded code?

How do I provide stable iteration order with std::map for embedded targets?

How do I provide stable iteration order with std::map in multithreaded code?

How do I avoid rehashing overhead with std::map in performance-sensitive code?

How do I merge two containers efficiently with std::map for embedded targets?