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Why do we need virtual functions in C++?

... a rat." So far so good, right? Animals eat generic 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-...
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How to create REST URLs without verbs?

I'm struggling to determine how to design restful URLs. I'm all for the restful approach of using URLs with nouns and not verbs don't understand how to do this. ...
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Uses for the Java Void Reference Type?

...ce type . The only situation I have ever seen it used is to parameterize Callable s 11 Answers ...
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AngularJS-Twig conflict with double curly braces

...erpolation by Twig so you have to be more careful with the contents, especially if you are using expressions. If you still hate seeing all those curly braces, you can also create a simple macro to automate the process: {% macro curly(contents) %} {{ '{{' ~ contents ~ '}}' }} {% endmacro %} ...
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pod install -bash: pod: command not found

I installed pod some time ago. However, it's stopped working so I'm working through this again. 21 Answers ...
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What does this Google Play APK publish error message mean?

...message meaning something like "your original APK hasn't been published to all the update servers yet, so some of them may miss that version entirely". But it's a bit of a guess. share | improve thi...
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How do I trim a file extension from a String in Java?

...have Apache Commons I/O already in your project, that's right. But if this all you need from it, you're adding (at least) 2.5 MB of dead weight to your project for something that can be easily done with a single line. – foo Sep 3 '18 at 9:40 ...
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Easy way to see saved NSUserDefaults?

... How can I view it for an already installed application? My client downloaded the application from the appstore, and something is wrong. I need to check the NSUserDefaults file – Dejell Mar 12 '13 at 8:21 ...
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Count character occurrences in a string in C++

... Small note, but the return type is typically signed. For some reason std::count returns type iterator_traits<InputIt>::difference_type, which for most standard containers is std::ptrdiff_t, not std::size_t. ...
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How do you automatically set text box to Uppercase?

...swered Jun 19 '12 at 11:35 freefallerfreefaller 17.2k55 gold badges4747 silver badges7575 bronze badges ...