40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
#include <iostream>
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#include <numeric>
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#include <vector>
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class join_strings_functor {
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private:
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std::string separator_ = " ";
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public:
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join_strings_functor() = default;
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join_strings_functor(std::string_view separator) : separator_(separator) {}
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std::string operator()(const std::string &left,
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const std::string &right) const {
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return left + separator_ + right;
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}
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};
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int main(int argc, char *argv[]) {
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std::cout << "Functor" << std::endl;
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std::vector<std::string> names = {"Albert", "Bernd", "Cora",
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"Dave", "Emil", "Frank"};
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auto space_joined_string =
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std::accumulate(std::next(names.begin()), names.end(), names.front(),
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join_strings_functor());
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std::cout << "Space-joined string: " << space_joined_string << std::endl;
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auto comma_joined_string =
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std::accumulate(std::next(names.begin()), names.end(), names.front(),
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join_strings_functor(", "));
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std::cout << "Comma-joined string: " << comma_joined_string << std::endl;
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return EXIT_SUCCESS;
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}
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