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In C++, what is a virtual base class?

...ve happened to any symbol (e.g. typedef, member variable, member function, cast to the base class, etc.). This really is a multiple inheritance issue, an issue that users should be aware to use multiple inheritance correctly, instead of going the Java way and conclude "Multiple inheritance is 100% e...
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How to execute a java .class from the command line

...classpath ( where java looks for .class definitions ) If that's the case and listing the contents of your dir displays: Echo.java Echo.class Then any of this may work: java -cp . Echo "hello" or SET CLASSPATH=%CLASSPATH;. java Echo "hello" And later as Fredrik points out you'll get an...
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How do I use Linq to obtain a unique list of properties from a list of objects?

... When taking Distinct we have to cast into IEnumerable too. If list is model means, need to write code like this IEnumerable<T> ids = list.Select(x => x).Distinct(); sha...
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Example of UUID generation using Boost in C++

...streaming support - there is a stringstream example. Or let boost::lexical_cast<std::string>(uuid) do that for you. – Georg Fritzsche Jul 15 '10 at 16:41 15 ...
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Dark theme in Netbeans 7 or 8

... Darcula UPDATE 2016-02: NetBeans 8 now has a Darcula plugin, better and more complete than the alternatives discussed in old version of this Answer. The attractive and productive Darcula theme in JetBrains IntelliJ is now available in NetBeans 8.0 & 8.1! The Real Thing This plugin p...
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Does Python's time.time() return the local or UTC timestamp?

... Based on the answer from #squiguy, to get a true timestamp I would type cast it from float. >>> import time >>> ts = int(time.time()) >>> print(ts) 1389177318 At least that's the concept. sh...
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Pandas read_csv low_memory and dtype options

....dtype('unicode'). When you give the dtype option a string, it will try to cast it via the numpy.dtype() factory by default. Specifying 'unicode' will actually not do anything, unicodes are just upcasted to objects. You will get dtype='object' – firelynx Jul 15...
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Loading existing .html file with android WebView

I did try samples, demos from Google codes and other resources with WebView , but when i try to do it in my own code, it doesn't work for me. ...
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How to write to a file in Scala?

...gement. Edit (September 2011): since Eduardo Costa asks about Scala2.9, and since Rick-777 comments that scalax.IO commit history is pretty much non-existent since mid-2009... Scala-IO has changed place: see its GitHub repo, from Jesse Eichar (also on SO): The Scala IO umbrella project consi...
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Import module from subfolder

... What would the syntax be if previously Foo1 was in the parent directory and one coded something like from Foo1 import *. Is there a way to achieve that same effect so you don't have to prefix everything with Foo1? – jxramos Apr 12 '17 at 23:41 ...