大约有 45,000 项符合查询结果(耗时:0.0373秒) [XML]

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select * vs select colum<em>nem>

If I just <em>nem>eed 2/3 colum<em>nem>s <em>a<em>nem>dem> I query SELECT * i<em>nem>stead of providi<em>nem>g th<em>osem>e colum<em>nem>s i<em>nem> select query, is there a<em>nem>y performa<em>nem>ce degradatio<em>nem> regardi<em>nem>g more/less I/O or memory? ...
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Filter by process/PID i<em>nem> Wireshark

... <em>nem>i<em>nem>ja out there who ma<em>nem>ages to do this.. – Rya<em>nem> Fer<em>nem><em>a<em>nem>dem>es Aug 27 '09 at 8:41 30 Wireshark k<em>nem>ows ...
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How to i<em>nem>crease the Java stack size?

...crease the ru<em>nem>time call stack size i<em>nem> the JVM. I've got a<em>nem> a<em>nem>swer to this, <em>a<em>nem>dem> I've also got ma<em>nem>y useful a<em>nem>swers <em>a<em>nem>dem> comme<em>nem>ts releva<em>nem>t to how Java h<em>a<em>nem>dem>les the situatio<em>nem> where a large ru<em>nem>time stack is <em>nem>eeded. I've exte<em>nem>ded my questio<em>nem> with the summary of the respo<em>nem>ses. ...
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How is this fibo<em>nem>acci-fu<em>nem>ctio<em>nem> memoized?

...mecha<em>nem>ism i<em>nem> Haskell is by-<em>nem>eed: whe<em>nem> a value is <em>nem>eeded, it is calculated, <em>a<em>nem>dem> kept ready i<em>nem> case it is asked for agai<em>nem>. If we defi<em>nem>e some list, xs=[0..] <em>a<em>nem>dem> later ask for its 100th eleme<em>nem>t, xs!!99, the 100th slot i<em>nem> the list gets "fleshed out", holdi<em>nem>g the <em>nem>umber 99 <em>nem>ow, ready for <em>nem>ext access. Th...
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Is D a credible alter<em>nem>ative to Java <em>a<em>nem>dem> C++? [cl<em>osem>ed]

Is the D la<em>nem>guage a credible alter<em>nem>ative to Java <em>a<em>nem>dem> C++? What will it take to become a credible alter<em>nem>ative? Should I bother lear<em>nem>i<em>nem>g it? Does it deserve eva<em>nem>gelizi<em>nem>g? ...
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pip broke. how to fix Distributio<em>nem><em>Nem>otFou<em>nem>d error?

...he reaso<em>nem> is because as @Stepha<em>nem> said, I use easy_i<em>nem>stall to i<em>nem>stall pip, <em>a<em>nem>dem> the mixture of both py package ma<em>nem>age tools led to the pkg_resources.Distributio<em>nem><em>Nem>otFou<em>nem>d problem. The resolve is: easy_i<em>nem>stall --upgrade pip Remember: just use o<em>nem>e of the above tools to ma<em>nem>age your Py packages. ...
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How to get <em>nem>ames of classes i<em>nem>side a jar file?

I have a JAR file <em>a<em>nem>dem> I <em>nem>eed to get the <em>nem>ame of all classes i<em>nem>side this JAR file. How ca<em>nem> I do that? 12 A<em>nem>swers ...
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Project structure for Google App E<em>nem>gi<em>nem>e

...<em>nem> i<em>nem> Google App E<em>nem>gi<em>nem>e right whe<em>nem> it came out, to play with the tech<em>nem>ology <em>a<em>nem>dem> work o<em>nem> a pet project that I had bee<em>nem> thi<em>nem>ki<em>nem>g about for a lo<em>nem>g time but <em>nem>ever gotte<em>nem> arou<em>nem>d to starti<em>nem>g. The result is BowlSK . However, as it has grow<em>nem>, <em>a<em>nem>dem> features have bee<em>nem> added, it has gotte<em>nem> really difficult to...
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How to preve<em>nem>t SIGPIPEs (or h<em>a<em>nem>dem>le them properly)

...that accepts co<em>nem><em>nem>ectio<em>nem>s o<em>nem> a TCP or local U<em>Nem>IX socket, reads a simple comm<em>a<em>nem>dem> <em>a<em>nem>dem>, depe<em>nem>di<em>nem>g o<em>nem> the comm<em>a<em>nem>dem>, se<em>nem>ds a reply. The problem is that the clie<em>nem>t may have <em>nem>o i<em>nem>terest i<em>nem> the a<em>nem>swer sometimes <em>a<em>nem>dem> exits early, so writi<em>nem>g to that socket will cause a SIGPIPE <em>a<em>nem>dem> make my server crash. What's th...
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How ca<em>nem> I debug javascript o<em>nem> <em>A<em>nem>dem>roid?

...orki<em>nem>g o<em>nem> a project that i<em>nem>volves Raphaeljs. Tur<em>nem>s out, it does<em>nem>'t work o<em>nem> <em>A<em>nem>dem>roid. It does o<em>nem> the iPho<em>nem>e. 18 A<em>nem>swers ...