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Why do we need virtual functions in C++?

...eneric food, cats eat rats, all without virtual. Let's change it a little now so that eat() is called via an intermediate function (a trivial function just for this example): // This can go at the top of the main.cpp file void func(Animal *xyz) { xyz->eat(); } Now our main function is: Anima...
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What is the exact problem with multiple inheritance?

...s say have two classes A and B, both of which define a method doSomething. Now you define a third class C, which inherits from both A and B, but you don't override the doSomething method. When the compiler seed this code... C c = new C(); c.doSomething(); ...which implementation of the method sh...
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Polymorphism with gson

... RuntimeTypeAdapter is now complete, unfortunately it doesn't look like it's in Gson core yet. :-( – Jonathan Aug 14 '13 at 12:52 ...
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How do I get a div to float to the bottom of its container?

...m.Microsoft.BasicImage(rotation=2); JSfiddle: http://jsfiddle.net/wcneY/ Now rotate all the elements that float left (give them a class) 180 degrees to put them straight again. Voila! they float to the bottom. share ...
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What is Autoloading; How do you use spl_autoload, __autoload and spl_autoload_register?

...tory of answers ever. Respect. I had one of those "OMG! It all makes sense now!" moments because of you, my good man. I think I might just start a fan club. – Just Plain High Nov 28 '13 at 2:03 ...
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How to style SVG with external CSS?

...zing your style definitions. Let's say you have 10 SVGs you want to style. Now you need to copy in a reference to the CSS into all the SVGs that need to be affected. And if the file name / location of your CSS changes, you need to update it in 10 SVGs. A CSS class feels a lot more symbolic than a re...
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Algorithm to generate a crossword

... @Kaffeine, yep I know what you mean - I had to throw out these options because even though they could create really good grids, it's too hard to check (read: I couldn't be bothered), and chances are it's just interference anyway. ...
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Web workers without a separate Javascript file?

... Google Chrome only solution, seems Firefox 10 will support it, i don't know about other browsers – 4esn0k Dec 1 '11 at 13:07 ...
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What's the difference between @Component, @Repository & @Service annotations in Spring?

...for any class that fulfils the role or stereotype of a repository (also known as Data Access Object or DAO). Among the uses of this marker is the automatic translation of exceptions, as described in Exception Translation. Spring provides further stereotype annotations: @Component, @Servic...
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Firing events on CSS class changes in jQuery

... @riscarrott i don't presume to know the OP's application. I'm just presenting them with the concept of pub/sub and they can apply it however they'd like. Disputing what the actual event name should be with the amount of info given is silly. ...