Replace const X f() with X f(). NFC.
#395
Merged
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Theoretically, this improves codegen by allowing
x = f()to move-from the returned temporary instead of requiring a copy. In these cases I don't expect any effect; it's just to keep the codebase clean.Also change
operator"" _degtooperator""_deg; the former spelling was deprecated in 2023 (but, strangely, was deprecated retroactively all the way back to C++11: see CWG2521).