6 Matching Annotations
- Apr 2022
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www.learncpp.com www.learncpp.com
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std::move_if_noexcept will return a movable r-value if the object has a noexcept move constructor, otherwise it will return a copyable l-value. We can use the noexcept specifier in conjunction with std::move_if_noexcept to use move semantics only when a strong exception guarantee exists (and use copy semantics otherwise).
如果在 move 过程中遇到异常,有什么办法可以处理?
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www.learncpp.com www.learncpp.com
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std::move can be used whenever we want to treat an l-value like an r-value for the purpose of invoking move semantics instead of copy semantics.
std::move
在什么情况下可以使用?
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www.learncpp.com www.learncpp.com
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First, r-value references extend the lifespan of the object they are initialized with to the lifespan of the r-value reference (l-value references to const objects can do this too). Second, non-const r-value references allow you to modify the r-value!
R-value references 有什么性质非常有用?
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- Jan 2022
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www.investopedia.com www.investopedia.com
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- Dec 2021
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twitter.com twitter.com
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ReconfigBehSci. (2021, December 14). RT @AlastairGrant4: R-value for Omicron across England is currently 5.5 (C.I 4.7-6.4) Doubling time 2.04 days (CI 1.87—2.23) 22% of TaqPa… [Tweet]. @SciBeh. https://twitter.com/SciBeh/status/1470954045242494983
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- Apr 2021
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www.sciencemediacentre.org www.sciencemediacentre.org
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‘Expert Reaction to Non-Peer Reviewed Modelling Presented on a Dashboard Suggesting That “a Herd Immunity Threshold (of 73.4%) Will Be Reached This Week on 9 April 2021” | Science Media Centre’. Accessed 12 April 2021. https://www.sciencemediacentre.org/expert-reaction-to-non-peer-reviewed-modelling-presented-on-a-dashboard-suggesting-that-a-herd-immunity-threshold-of-73-4-will-be-reached-this-week-on-9-april-2021/.
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- COVID-19
- immunity
- variants
- infection
- vaccine
- effectiveness
- lang:en
- R value
- disease
- is:article
- herd immunity
- immunization
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