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@ -2840,7 +2840,7 @@ For advanced uses (only), where you really need to optimize for rvalues passed t
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Avoid "esoteric techniques" such as:
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* Passing arguments as `T&&` "for efficiency".
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Most rumors about performance advantages from passing by `&&` are false or brittle (but see [F.18](#Rf-consume) and [F.19](#Rf-forward).)
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Most rumors about performance advantages from passing by `&&` are false or brittle (but see [F.18](#Rf-consume) and [F.19](#Rf-forward)).
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* Returning `const T&` from assignments and similar operations (see [F.47](#Rf-assignment-op).)
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##### Example
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Jonathan Wakely
9 years ago