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收录了59512篇文章 ·61549个问题 · 0人关注
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Why doesn't polymorphism work without pointers

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: IdidfindsomequestionsalreadyonSOwithsimilartitle-butwhenIreadtheanswerstheywerefocussingondifferentpartsofthequestio......

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Static variables initialisation order

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: C++guaranteesthatvariablesinacompilationunit(.cppfile)areinitialisedinorderofdeclaration.Fornumberofcompilationunitsthis......

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Is const_cast safe?

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: Ican\'tfindmuchinformationonconst_cast.TheonlyinfoIcouldfind(onStackOverflow)is: Theconst_cast<>()isusedtoadd/remov......

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What is the correct answer for cout << a++ &

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: Recentlyinaninterviewtherewasafollowingobjectivetypequestion. inta=0; cout<<a++<<a; Answers: a.10 b.01 c.undefinedbe......

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Forward declaration of nested types/classes 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: Irecentlygotstuckinasituationlikethis: classA { public: typedefstruct/class{...}B; ... C::D*someField; } classC { pub......

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Visual Studio support for new C / C++ standards?

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: IkeepreadingaboutC99andC++11andallthesetotallysweetthingsthataregettingaddedtothelanguagestandardthatmightbenicetou......

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How to emulate C array initialization “int arr[] =

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: (Note:Thisquestionisaboutnothavingtospecifythenumberofelementsandstillallownestedtypestobedirectlyinitialized.) Thisque......

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How does the Import Library work? Details?

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: Iknowthismayseemquitebasictogeeks.ButIwanttomakeitcrystalclear. WhenIwanttouseaWin32DLL,usuallyIjustcalltheAPIs......

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How can I pad an int with leading zeros when using

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: Iwantcouttooutputanintwithleadingzeros,sothevalue1wouldbeprintedas001andthevalue25printedas025.HowcanIdothis? ......

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Why should the copy constructor accept its paramet

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: Whymustacopyconstructorbepasseditsparameterbyreference? 回答1: Becauseifit\'snotbyreference,it\'sbyvalue.Todothatyo......

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shared_ptr to an array : should it be used?

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: Justasmallqueryregardingshared_ptr. Isitagoodpracticetouseshared_ptrpointingtoanarray?Forexample, shared_ptr<int>sp(new......

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How to make my custom type to work with “range-bas

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: LikemanypeoplethesedaysI\'vebeentryingthedifferentfeaturesthatC+11brings.Oneofmyfavoritesisthe\"range-basedforloops\". ......

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How do I safely pass objects, especially STL objec

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: HowdoIpassclassobjects,especiallySTLobjects,toandfromaC++DLL? Myapplicationhastointeractwiththird-partypluginsinthef......

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pure virtual function with implementation

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: Mybasicunderstandingisthatthereisnoimplementationforapurevirtualfunction,however,Iwastoldtheremightbeimplementationfor......

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Is the pImpl idiom really used in practice?

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: Iamreadingthebook\"ExceptionalC++\"byHerbSutter,andinthatbookIhavelearnedaboutthepImplidiom.Basically,theideaistocr......

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How to convert wstring into string?

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: Thequestionishowtoconvertwstringtostring? Ihavenextexample: #include<string> #include<iostream> intmain() { std::wstrin......

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mmap() vs. reading blocks

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\'mworkingonaprogramthatwillbeprocessingfilesthatcouldpotentiallybe100GBormoreinsize.Thefilescontainsetsofvariablel......

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How do you clear a stringstream variable?

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\'vetriedseveralthingsalready, std::stringstreamm; m.empty(); m.clear(); bothofwhichdon\'twork. 回答1: Forallthestandard......

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How to implement the factory method pattern 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: There\'sthisonethinginC++whichhasbeenmakingmefeeluncomfortableforquitealongtime,becauseIhonestlydon\'tknowhowtodoit......

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Makefiles, how can I use them? [closed]

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: ^Thisisnotaduplicatequestion^ Updated: I\'mfairlynewtoprogrammingandI\'veonlynowjustcomeacrossmakefiles. I\'vedownload......