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What is polymorphism, what is it for, <em>a<em>nem>dem> how is it used?

What is polymorphism, what is it for, <em>a<em>nem>dem> how is it used? 28 A<em>nem>swers 28 ...
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&& (<em>A<em>Nem>Dem>) <em>a<em>nem>dem> || (OR) i<em>nem> IF stateme<em>nem>ts

... <em>Nem>o, it will <em>nem>ot be evaluated. <em>A<em>nem>dem> this is very useful. For example, if you <em>nem>eed to test whether a Stri<em>nem>g is <em>nem>ot <em>nem>ull or empty, you ca<em>nem> write: if (str != <em>nem>ull &amp;&amp; !str.isEmpty()) { d<em>oSem>omethi<em>nem>gWith(str.charAt(0)); } or, the other way arou<em>nem>d if ...
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Why use JU<em>nem>it for testi<em>nem>g?

Maybe my questio<em>nem> is a <em>nem>ewbie o<em>nem>e, but I ca<em>nem> <em>nem>ot really u<em>nem>derst<em>a<em>nem>dem> the circumsta<em>nem>ces u<em>nem>der which I would use ju<em>nem>it ? 11 A<em>nem>...
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Why is it <em>nem>ot advisable to have the database <em>a<em>nem>dem> web server o<em>nem> the same machi<em>nem>e?

...<em>nem>i<em>nem>g to Scott Ha<em>nem>selma<em>nem>'s i<em>nem>terview with the Stack Overflow team ( part 1 <em>a<em>nem>dem> 2 ), he was adama<em>nem>t that the SQL server <em>a<em>nem>dem> applicatio<em>nem> server should be o<em>nem> separate machi<em>nem>es. Is this just to make sure that if o<em>nem>e server is compromised, both systems are<em>nem>'t accessible? Do the security co<em>nem>cer<em>nem>s outwe...
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Whe<em>nem> should I use a traili<em>nem>g slash i<em>nem> my URL?

...misused. Basically the URL format came from the same U<em>Nem>IX format of files <em>a<em>nem>dem> folders, later o<em>nem>, o<em>nem> D<em>OSem> systems, <em>a<em>nem>dem> fi<em>nem>ally, adapted for the web. A typical URL for this book o<em>nem> a U<em>nem>ix-like operati<em>nem>g system would be a file path such as file:///home/user<em>nem>ame/Romeo<em>A<em>nem>dem>Juliet.pdf, ide<em>nem>tifyi<em>nem>g the e...
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How to attach javadoc or sources to jars i<em>nem> libs folder?

...<em>nem> the /libs folder are added to the build co<em>nem>figuratio<em>nem> <em>nem>ow. U<em>nem>fortu<em>nem>ately <em>A<em>nem>dem>roid Depe<em>nem>de<em>nem>cies classpath co<em>nem>tai<em>nem>er is <em>nem>o<em>nem> modifiable. ...
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What is the differe<em>nem>ce betwee<em>nem> <em>Nem>o<em>nem>-Repeatable Read <em>a<em>nem>dem> Pha<em>nem>tom Read?

What is the differe<em>nem>ce betwee<em>nem> <em>nem>o<em>nem>-repeatable read <em>a<em>nem>dem> pha<em>nem>tom read? 9 A<em>nem>swers 9 ...
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<em>A<em>nem>dem>roid Facebook style slide

The <em>nem>ew Facebook applicatio<em>nem> <em>a<em>nem>dem> its <em>nem>avigatio<em>nem> is so cool. I was just tryi<em>nem>g to see how it ca<em>nem> be emulated i<em>nem> my applicatio<em>nem>. ...
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Best practice: PHP Magic Methods __set <em>a<em>nem>dem> __get [duplicate]

... I have bee<em>nem> exactly i<em>nem> your case i<em>nem> the past. <em>A<em>nem>dem> I we<em>nem>t for magic methods. This was a mistake, the last part of your questio<em>nem> says it all : this is slower (tha<em>nem> getters/setters) there is <em>nem>o auto-completio<em>nem> (<em>a<em>nem>dem> this is a major problem actually), <em>a<em>nem>dem> type ma<em>nem>ageme<em>nem>t b...
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What is the differe<em>nem>ce betwee<em>nem> MVC <em>a<em>nem>dem> MVVM? [cl<em>osem>ed]

Is there a differe<em>nem>ce betwee<em>nem> the st<em>a<em>nem>dem>ard "Model View Co<em>nem>troller" patter<em>nem> <em>a<em>nem>dem> Micr<em>osem>oft's Model/View/ViewModel patter<em>nem>? 25...