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March 22, 2021 05:51
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palidrome.cc
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| bool is_palindrome(std::string_view str) | |
| { | |
| auto letters_only{str | |
| | std::views::filter([](char c) { return std::isalnum(c, std::locale{}); }) | |
| | std::views::transform([](char c) { return std::tolower(c, std::locale{}); }) | |
| }; | |
| auto reversed{letters_only | std::views::reverse}; | |
| return std::ranges::equal(letters_only, reversed); | |
| } |
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