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When do you need to explicitly call a superclass constructor?

So say I have a subclass that extends a superclass. In what scenarios do I need to explicitly type super() to get the superclass constructor to run? ...
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What is the proper way to re-attach detached objects in Hibernate?

...ng by the number of similar questions about JPA, it seems that even if JPA does claim to have a coherent model, it most certainly does not match the mental model of most programmers, who have been cursed to waste many hours trying understand how to get JPA to do the simplest things, and end up wit...
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Can virtual functions have default parameters?

...face class) and specify a default value for one or more of its parameters, do the derived classes have to specify the same defaults and if not, which defaults will manifest in the derived classes? ...
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Can you do greater than comparison on a date in a Rails 3 search?

...l not correct. So ensure to convert the p[date] to your current UTC before do it – Paulo Tarud Sep 22 '17 at 19:34  |  show 1 more comment ...
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How do I capitalize first letter of first name and last name in C#?

...etter of a string and lower the rest of it? Is there a built in method or do I need to make my own? 17 Answers ...
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Best way to initialize (empty) array in PHP

...for example), it has been noted that initializing a new array is faster if done like this var foo = [] rather than var foo = new Array() for reasons of object creation and instantiation. I wonder whether there are any equivalences in PHP? ...
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Is it a bad practice to catch Throwable?

... Throwable covers Error as well and that's usually no point of return. You don't want to catch/handle that, you want your program to die immediately so that you can fix it properly. share | improve ...
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How to play ringtone/alarm sound in Android

... Ringtone can not stoppable. If start ringtone again, plays double. stopPrevious not working, by the way I create ringtone player with the same context object, not getapplicationcontext. – Metehan Toksoy Dec 24 '15 at 18:11 ...
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What is the purpose of setting a key in data.table?

...e me to set a key (e.g. X[Y] ). As such, I wish to understand what a key does in order to properly set keys in my data tables. ...
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How do I split a string so I can access item x?

Using SQL Server, how do I split a string so I can access item x? 44 Answers 44 ...