Lightning Talk: C++ String Literals Have the Wrong Type
summary
String literals decay to arrays so std::ranges::size("abc") == 4 because the null terminator counts. The fix uses UDLs, NTTPs and TMP: a user defined literal returns a small compile time range type that stores pointer+length, implicitly converts to a C string, supports compile time concatenation without allocating memory, and produces correct begin/end where size is 3. It also supports different character types for UTF conversions and avoids instantiating storage until actually used.
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