Why Don't You Use String Views Instead of Passing Std:Wstring by Const&
a day ago
- #String Handling
- #Win32 API
- #C++ Programming
- Passing std::wstring by const& is preferred over std::wstring_view when interfacing with Win32 APIs that expect null-terminated strings (PCWSTR).
- std::wstring guarantees null-termination via data(), whereas std::wstring_view does not, risking subtle runtime bugs.
- Using string_view in such contexts introduces potential errors due to lack of null-termination guarantees for Win32 API calls.
- Invoking c_str() instead of data() on strings can prevent errors if code is incorrectly modernized to string_view, as it causes compile-time errors.
- The data() method must be used when APIs need to write to string buffers, as c_str() is only for const cases.