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Number of occurrences of a character in a string [duplicate]

... It's worth noting the first approach could be incredibly expensive, if the string is large. Worst case if the string is large and (almost) entirely made up of repeated delimiters (&), it could allocate 12-24x the original size of the string due to object overheads in .Net. I would go with...
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How can I determine the type of an HTML element in JavaScript?

... element name capitalized and without the angle brackets, which means that if you want to check if an element is an <div> element you could do it as follows: elt.nodeName == "DIV" While this would not give you the expected results: elt.nodeName == "<div>" ...
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How to catch an Exception from a thread

... What can I do, if I want to throw the exception to an upper level? – rodi Feb 25 '15 at 11:25 6 ...
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Maven Install on Mac OS X

... OS X prior to Mavericks (10.9) actually comes with Maven 3 built in. If you're on OS X Lion, you won't have java installed by default. Just run java by itself and it'll prompt you to install it. Assuming qualifications are met, run mvn -version and see some output like this: Apache Maven 3....
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Refresh Fragment at reload

... I think you want to refresh the fragment contents upon db update If so, detach the fragment and reattach it // Reload current fragment Fragment frg = null; frg = getSupportFragmentManager().findFragmentByTag("Your_Fragment_TAG"); final FragmentTransaction ft = getSupportFragmentManager()....
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Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)

... be noted that this method works with MultiIndex as well (using df1 as specified in Paul's example): >>> %timeit df1.groupby(level=df1.index.names).last() 1000 loops, best of 3: 771 µs per loop >>> %timeit df1[~df1.index.duplicated(keep='last')] 1000 loops, best of 3: 365 µs per...
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How to initialize private static members in C++?

... The class declaration should be in the header file (Or in the source file if not shared). File: foo.h class foo { private: static int i; }; But the initialization should be in source file. File: foo.cpp int foo::i = 0; If the initialization is in the header file then each file tha...
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What is the Invariant Culture?

..., serialization: you can have 1,1 value in one culture and 1.1 in another. If you will try to parse "1,1" value in the second culture, then parsing will fail. However you can use the invariant culture to convert a number to a string and later parse it back from any computer with any culture set. //...
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How do you test private methods with NUnit?

...ping" algorithm that happens in between the private and the public meaning if I were to Unit Test the public, it would actually be an integration test. In this scenario I think it trying to write the test points to a design problem in the code. in which case I should probably create a different clas...
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Get statistics for each group (such as count, mean, etc) using pandas GroupBy?

... Please see my answer if you want to get only one count column per group. – Pedro M Duarte Sep 26 '15 at 19:43 ...