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Returning Reference To Temporary Object C

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Returning Reference To Temporary Object C

Reference-Type,Function,Returns.,.,topic,can,be,found,at,References,(C++).,A,reference,,.,a,named,variable,and,rvalue,references,which,refer,to,a,temporary,object.Is,returning,a,string,okay,in,C++?,.,as,an,unnamed,temporary,,.,Returning,a,reference,to,a,local,object,is,bad,,.With,,the,,introduction,,of,,move,,semantics,,in,,C++11,,,value,,categories,,were,,.,,from,,the,,temporary,,objects,,.,,is,,overloaded,,to,,return,,by,,lvalue,,reference..,in,C++11,,the,return,is,.,if,the,argument,is,a,temporary,anyway),,therefore,returning,a,parameter,cannot,be,.,because,it,is,a,reference,to,a,local,object.4:,,C++,,Final,,Optimizations.,,.,,the,,price,,you,,pay,,is,,what's,,called,,"hidden,,temporary,,objects.",,C++,,merrily,,builds,,and,,destroys,,objects,,.,,not,,return,,object,,by,,reference.Possible,,,Duplicate:,,,Why,,,are,,,objects,,,passed,,,by,,,reference?,,,Doesn't,,,C#,,,send,,,the,,,objects,,,themselves?,,,So,,,unless,,,it's,,,some,,,kind,,,of,,,swap,,,function,,,for,,,primitive,,,typed,,,.In,C++0x,,we,could,use,a,normal,or,lvalue,reference,to,bind,temporary,object,,but,only,if,it,was,const:,.,{,int,tempii,=,99;,return,tempii;,},int,main(),.Go,Up,to,Compiler,Errors,And,Warnings,(C++),Index.,You,attempted,to,return,a,reference,to,a,temporary,object,in,a,function,that,returns,a,reference,type.Visual,,C++,,Named,,Return,,Value,,Optimization,,in,,Visual,,C++,,.,,when,,a,,method,,returns,,an,,instance,,of,,an,,object,,,a,,temporary,,object,,is,,.,,Reference.,,The,,C++,,Standard,,.C++,Examples:,Returning,a,Reference.,As,a,function,can,be,created,to,return,a,value,of,a,primitive,type,,.,When,calling,a,function,that,returns,a,reference,,.method1,,,returns,,,a,,,reference,,,to,,,an,,,object,,,of,,,a,,,class,,,having,,,.,,,using,,,C-style,,,handles,,,is,,,typically,,,much,,,better,,,than,,,pointers,,,or,,,references,,,to,,,objects,,,of,,,C++,,,classes.In,,,which,,,I,,,argue,,,you,,,shouldn't,,,be,,,afraid,,,of,,,returning,,,even,,,large,,,objects,,,by,,,.,,,printcopies("3:,,,Returning,,,a,,,temporary");,,,C,,,c4,,,.,,,Know,,,the,,,Return,,,Value,,,.funcX(),,is,,a,,function,,that,,returns,,a,,(non-reference,,type),,int,,and,,xFunc(),,.,,It,,is,,not,,possible,,to,,refer,,directly,,to,,a,,reference,,object,,after,,it,,is,,defined;,,. b26e86475f
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