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收录了59512篇文章 ·61549个问题 · 0人关注
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When to use reinterpret_cast?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iamlittleconfusedwiththeapplicabilityofreinterpret_castvsstatic_cast.FromwhatIhavereadthegeneralrulesaretousestaticcas......

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static variable link error

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'mwritingC++codeonamac.WhydoIgetthiserrorwhencompiling?: Undefinedsymbolsforarchitecturei386:\"Log::theString\", ......

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cout << order of call to functions it prints

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: thefollowingcode: myQueue.enqueue(\'a\'); myQueue.enqueue(\'b\'); cout<<myQueue.dequeue()<<myQueue.dequeue(); prints\"ba\&quo...

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What is wrong with using goto? [duplicate]

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: PossibleDuplicates: Whyisitbadtousegoto? GOTOstillconsideredharmful? Iwasramdommingthroughxkcdandsawthisone(i......

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How do I specify a pointer to an overloaded functi

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iwanttopassanoverloadedfunctiontothestd::for_each()algorithm.Forexample, classA{ voidf(charc); voidf(inti); v......

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C++ #include guards

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: SOLVED WhatreallyhelpedmewasthatIcould#includeheadersinthe.cppfilewithoutcausingtheredefinederror. I\'mnewtoC++but......

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System where 1 byte != 8 bit? [duplicate]

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Thisquestionalreadyhasananswerhere: Whatplatformshavesomethingotherthan8-bitchar? ......

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Guaranteed lifetime of temporary in C++?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: DoesC++provideaguaranteeforthelifetimeofatemporaryvariablethatiscreatedwithinafunctioncallbutnotusedasaparameter?He......

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How to determine if a string is a number with C++?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'vehadquiteabitoftroubletryingtowriteafunctionthatchecksifastringisanumber.ForagameIamwritingIjustneedtochec......

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How do you serialize an object in C++?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IhaveasmallhierarchyofobjectsthatIneedtoserializeandtransmitviaasocketconnection.Ineedtobothserializetheobject,then......

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Legality of COW std::string implementation in C++1

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ithadbeenmyunderstandingthatcopy-on-writeisnotaviablewaytoimplementaconformingstd::stringinC++11,butwhenitcameupindi......

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1D or 2D array, what's faster?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'minneedofrepresentinga2Dfield(axesx,y)andIfaceaproblem:ShouldIusean1Darrayora2Darray? Icanimagine,thatrecalc......

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Which, if any, C++ compilers do tail-recursion opt

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delete vs delete[] operators in C++

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Whatisthedifferencebetweendeleteanddelete[]operatorsinC++? 回答1: Thedeleteoperatordeallocatesmemoryandcallsthedestruct......

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Weighted random numbers

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'mtryingtoimplementaweightedrandomnumbers.I\'mcurrentlyjustbangingmyheadagainstthewallandcannotfigurethisout. Inmyp......

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How to redirect cin and cout to files?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: HowcanIredirectcintoin.txtandcouttoout.txt? 回答1: Hereisanworkingexampleofwhatyouwanttodo.Readthecommentstoknow......

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How does `void_t` work

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IwatchedWalterBrown\'stalkatCppcon14aboutmoderntemplateprogramming(PartI,PartII)wherehepresentedhisvoid_tSFINAEtechnique......

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What breaking changes are introduced in C++11?

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usr/bin/ld: cannot find -l

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Capturing function exit time with __gnu_mcount_nc

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'mtryingtodosomeperformanceprofilingonapoorlysupportedprototypeembeddedplatform. InotethatGCC\'s-pgflagcausesthunkst......