#include <iostream>
#include <string>
#include <string_view>
#include <ranges>
#include <vector>
/*
split_ranges(s, delim)
----------------------
Splits a string_view using C++20 ranges and returns a vector<string>.
This uses:
- std::views::split → splits into subranges
- std::views::transform → converts each subrange into std::string
The function is efficient because:
- It avoids manual loops
- It avoids repeated allocations except for final strings
- It uses lazy range pipelines
*/
std::vector<std::string> split_ranges(std::string_view s, char delim) {
auto rng =
s
| std::views::split(delim)
| std::views::transform([](auto&& sub) {
// Convert each subrange into a std::string
return std::string(sub.begin(), sub.end());
});
// Materialize the lazy range into a vector<string>
return {rng.begin(), rng.end()};
}
int main() {
std::string input = "What if this is the best version?";
char delim = ' ';
// Use the split_ranges function
auto parts = split_ranges(input, delim);
std::cout << "\nSplit result:\n";
for (const auto& p : parts) {
std::cout << "[" << p << "]\n";
}
}
/*
run:
Split result:
[What]
[if]
[this]
[is]
[the]
[best]
[verion?]
*/
