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How is “=default” different from “{}” for default constructor and destructor?

I originally posted this as a question only about destructors, but now I'm adding consideration of the default constructor. Here's the original question: ...
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How to prevent Browser cache for php site

..., those are the headers sent by PHP without specifying the above in my installation.. It seems PHP tries to prevent browser caching by default... – fast-reflexes May 19 '13 at 10:03 ...
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Linking to an external URL in Javadoc?

... I recommend <a href="http://google.com" target="_top">http://google.com</a>. The reason for adding target="_top" is because some of the generated javadoc html files make use of frames, and you probably want the navigation to affect the whole page rather than just...
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Minimum and maximum value of z-index?

...t to 0 and is not a negative number. Note that many properties that allow an integer or real number as a value actually restrict the value to some range, often to a non-negative value. So basically there are no limitations for z-index value in the CSS standard, but I guess most browse...
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How to add leading zeros for for-loop in shell? [duplicate]

... that this feature got introduced with bash-4.0-alpha: Brace expansion now allows zero-padding of expanded numeric values and will add the proper number of zeroes to make sure all values contain he same number of digits.). – Adrian Frühwirth Feb 13 '15 at 18:5...
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What is the difference between a.getClass() and A.class in Java?

...getClass() will return the B class. A.class evaluates to the A class statically, and is used for other purposes often related to reflection. In terms of performance, there may be a measurable difference, but I won't say anything about it because in the end it is JVM and/or compiler dependent. T...
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Confused about Service vs Factory

... All angular services are singletons: Docs (see Services as singletons): https://docs.angularjs.org/guide/services Lastly, it is important to realize that all Angular services are application singletons. This means that t...
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JQuery: 'Uncaught TypeError: Illegal invocation' at ajax request - several elements

...er correct entries). So, instead of: var data = { 'mode': 'filter_city', 'id_A': e[e.selectedIndex] }; it should be: var data = { 'mode': 'filter_city', 'id_A': e[e.selectedIndex].value }; Note: check Jason Kulatunga's answer, it quotes JQuery doc to explain wh...
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How to stop /#/ in browser with react-router?

... Note that history is a stand-alone package you'll need to install. – Jan Klimo Oct 24 '15 at 15:01 4 ...
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iPhone Debugging: How to resolve 'failed to get the task for process'?

...the app includes an Entitlements.plist file, which is not necessary to install onto the device for debugging. In general, then, I have included this file for release builds (where it is required for the App Store) and removed it for debugging (so I can debug the app from XCode). That may be your pro...