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#include <ctre.hpp>
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#include <optional>
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#include <iostream>
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std::string match(std::string_view sv) {
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if (auto match = ctre::match<"[a-z]+">(sv); match) {
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return match.to_string();
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} else {
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return "not_match";
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}
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}
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int main() {
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std::cout << match("hello") << "\n";
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} |