What is getattr() exactly and how do I use it?
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与风俱净
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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: Iwasreadingaboutthegetattr()function.TheproblemisthatIstillcan\'tgrasptheideaofitsusage.TheonlythingIunderstandaboutgetattr()isthatgetattr(li,\po...
Android - Camera preview is sideways
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与风俱净
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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: IamusingaPreviewtodisplaywhatthecamerasee\'sonthescreen. Icangeteverythingworkingfine,surfacecreated,surfacesetandthesurfaceisdisplayed. Howeve...
What effect(s) can the virtual keyword have in Ent
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与风俱净
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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: DoesthevirtualkeywordhasaneffectwhenusedonthepropertiesinEFCodeFirst?.Cansomeonedescribeallofitsramificationsindifferentsituations? Forinstance,...
Concatenating two std::vectors
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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: HowdoIconcatenatetwostd::vectors? 回答1: vector1.insert(vector1.end(),vector2.begin(),vector2.end()); 回答2: IfyouareusingC++11,andwishtomovetheel...
Create an empty data.frame
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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\'mtryingtoinitializeadata.framewithoutanyrows.Basically,Iwanttospecifythedatatypesforeachcolumnandnamethem,butnothaveanyrowscreatedasaresult. ...