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Is a^a or a-a undefined behaviour if a is not init

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: Considerthisprogram: #include<stdio.h> intmain(void) { unsignedinta; printf(\%u%u\\n\,a^a,a-a); return0; } Isitundefinedbehaviour? Ont...

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Default variable value

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: IfIdon\'tassignavaluetoavariablewhenIdeclareit,doesitdefaulttozeroorjustwhateverwaspreviouslyinthememory? e.g. floatx; 回答1: Adeclaredvariable...

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ARM: link register and frame pointer

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\'mtryingtounderstandhowthelinkregisterandtheframepointerworkinARM.I\'vebeentoacoupleofsites,andIwantedtoconfirmmyunderstanding. SupposeIhadthe...

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How do I do a bulk insert in mySQL using node.js

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: HowwouldonedoabulkinsertintomySQLifusingsomethinglike https://github.com/felixge/node-mysql 回答1: Bulkinsertsarepossiblebyusingnestedarray,seethe...

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Is it possible to style a select box? [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: I\'vegotanHTMLselectboxthatIneedtostyle.I\'dprefertousejustCSSbutifIhavetoI\'llusejQuerytofillinthegaps. Cananyonerecommendagoodtutorialorplugin...

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