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How to hide one item in an Android Spinner

I am looking for a way to hide one item in an Android spinner widget. This would allow you to simulate a spinner with no items selected, and ensures that the onItemSelected() callback is always called for every item selected (if the hidden item is the "current" one). Normally there is always one ite...
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Are there benefits of passing by pointer over passing by reference in C++?

... for NULL since the NULL iterator concept has a different syntax). http://www.cplusplus.com/articles/z6vU7k9E/ What I take from this is that the major difference between choosing to use a pointer or reference parameter is if NULL is an acceptable value. That's it. Whether the value is inp...
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C++ static virtual members?

Is it possible in C++ to have a member function that is both static and virtual ? Apparently, there isn't a straightforward way to do it ( static virtual member(); is a compile error), but is there at least a way to achieve the same effect? ...
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Are PHP include paths relative to the file or the calling code?

...e only reason why it searches first in the current working directory. See http://php.net/manual/en/function.include.php. Files are included based on the file path given or, if none is given, the include_path specified. If the file isn't found in the include_path, include will finally chec...
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How to trigger event when a variable's value is changed?

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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How do I find a “gap” in running counter with SQL?

I'd like to find the first "gap" in a counter column in an SQL table. For example, if there are values 1,2,4 and 5 I'd like to find out 3. ...
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How do I get ruby to print a full backtrace instead of a truncated one?

When I get exceptions, it is often from deep within the call stack. When this happens, more often than not, the actual offending line of code is hidden from me: ...
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Bootstrap Carousel image doesn't align properly

...nd my image looks like: <div class="active item" id="2"><a href="http://epdining.com/eats.php?place=TestRestaurant1"><img src="rimages/2.jpg"></a><div class="carousel-caption"><p>This restaurant is featured blah blah blah blah blah.</p></div></div&...
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When to use volatile with multi threading?

... etc. One note in the standard even points the connection to hardware: http://eel.is/c++draft/intro.races#19 [ Note: The four preceding coherence requirements effectively disallow compiler reordering of atomic operations to a single object, even if both operations are relaxed loads. This ef...
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Learning Ant path style

...ll match com/test.jsp and assign the value test to the filename variable http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/util/AntPathMatcher.html share | improve this ans...