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What is the difference between public, protected, package-private and private in Java?

... friends -> "The less you know about it the better" ---> It gives selective visibility, which is still superior to package privacy. In C++, it has its uses, because not all functions can be member functions, and friends is better than public'ing. Of course there is a danger of misuse by evi...
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Android Studio - Where can I see callstack while debugging an android app?

... At the bottom panel you should have "5: Debug". Click on it and select "Debugger -> Threads" You may need to find the "Threads" icon on the far right, or even click the "Restore Layout" button on the left to restore this window. ...
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Difference between $(document.body) and $('body')

...ctly to jQuery. Alternatively, when you pass the string 'body', the jQuery selector engine has to interpret the string to figure out what element(s) it refers to. In practice either will get the job done. If you are interested, there is more information in the documentation for the jQuery function...
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Move capture in lambda

...t;type_traits> #include <functional> namespace detail { enum selection_enabler { enabled }; } #define ENABLE_IF(...) std::enable_if_t<(__VA_ARGS__), ::detail::selection_enabler> \ = ::detail::enabled // This allows forwarding an object using the copy c...
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What's the fastest algorithm for sorting a linked list?

...is best, followed by Quicksort and Mergesort. Sediment sort, bubble sort, selection sort perform very badly. A COMPARATIVE STUDY OF LINKED LIST SORTING ALGORITHMS by Ching-Kuang Shene http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.31.9981 ...
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How do I check if a string contains a specific word?

...sets of functionality into a single multi-purpose function (including with selectable case sensitivity), you could use something like this: function FindString($needle,$haystack,$i,$word) { // $i should be "" or "i" for case insensitive if (strtoupper($word)=="W") { // if $word is "W" th...
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SQLAlchemy: Creating vs. Reusing a Session

...nging around in that Session, when you access them you'll get a single-row SELECT for each one of them as they each individually refresh their state in terms of the new transaction. – zzzeek Sep 27 '15 at 18:16 ...
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Which is more efficient: Multiple MySQL tables or one large table?

...ectly then you should only need the intense lookup by doing something like select * from users where name="bob". Once you have bob then you are using an index to find the joined tables to bob which is significantly faster because you are using bob's id. This happens regardless of if you are doing a ...
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Initialization of an ArrayList in one line

...matically do for you. For example in IntelliJ IDEA you press Alt+Enter and select Static import method.... However, i don't recommend shortening the List.of method to of, because that becomes confusing. List.of is already short enough and reads well. Using Streams Why does it have to be a List? Wi...
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NSAttributedString add text alignment

... least it displayed the line as centered, but the thing seems to be buggy, selection doesn't work properly with centered text. – omz Jul 24 '11 at 0:53 ...