15 lines
403 B
C++
15 lines
403 B
C++
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#pragma once
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#include <optional>
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#include <string>
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#include <vector>
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namespace cpp17 {
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[[nodiscard]] auto safe_divide(int lhs, int rhs) -> std::optional<double>;
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[[nodiscard]] auto find_user(const std::vector<std::string>& users, const std::string& name)
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-> std::optional<std::size_t>;
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[[nodiscard]] auto first_positive(const std::vector<int>& data) -> std::optional<int>;
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} // namespace cpp17
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