GoKawiilC++ blog details when compilers auto-move objects without std::move
A C++ programming tutorial explains that developers should rarely write std::move explicitly, because the language already applies return value optimization (RVO) and implicit moves in many common cases. The post walks through examples like pure RVO, named RVO, and functions returning parameters by value to show when the compiler elides copies or moves automatically.
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Unnecessary copies are a well-known performance drain in C++ code, and misunderstanding when moves happen automatically can lead developers to add redundant or even harmful std::move calls. Clarifying these compiler behaviors helps engineers write faster code by default without manual intervention.
- Guaranteed copy elision since C++17 eliminates copies in pure RVO scenarios.
- Named return value optimization (NRVO) often avoids copies too, though not guaranteed by the standard.
- Implicit moves occur in certain function return contexts, reducing the need for explicit std::move.
Effective Modern C++ by Scott Meyers — If posts about std::move, copy elision, and RVO make you want to go deeper, this is the classic guide to modern C++ idioms. Scott Meyers walks through move semantics, perfect forwarding, and rvalue references in item-by-item detail, exactly the territory this article touches on.
See Effective Modern C++ by Scott Meyers on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: andreasfertig.com — Andreas Fertig, 2026-09-01
Published there as: “Move in C++ without a std:move”
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