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what is the most efficient way of counting occurrences in pandas?
... What about counting over the entire DataFrame? This works for one column.
– Vaidøtas I.
Jan 23 at 8:49
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Relative paths based on file location instead of current working directory [duplicate]
...wered Jun 9 '14 at 1:55
Martin KonecnyMartin Konecny
47.5k1818 gold badges110110 silver badges142142 bronze badges
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std::string to char*
...ard I also explain some side effects of the use of this function, of which one is that you may not edit the string returned by c_str(). You mistakenly see my short examples as real problem-solving code, which it's not.
– orlp
Sep 8 '11 at 20:19
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Plot a bar using matplotlib using a dictionary
... can of course wrap those two lines up in a function and then it becomes a one-liner ;)
– tacaswell
Apr 15 '13 at 16:04
2
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What is a ViewModelLocator and what are its pros/cons compared to DataTemplates?
Can someone give me a quick summary of what a ViewModelLocator is, how it works, and what the pros/cons are for using it compared to DataTemplates?
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What is the definition of “interface” in object oriented programming
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An interface is one of the more overloaded and confusing terms in development.
It is actually a concept of abstraction and encapsulation. For a given "box", it declares the "inputs" and "outputs" of that box. In the world of software, that ...
Does C# have extension properties?
...idates to be included in a future release of Roslyn, but maybe not the 7.0 one.
Update: May 2017
The extension members has been closed as duplicate of extension everything issue which is closed too.
The main discussion was in fact about Type extensibility in a broad sense.
The feature is now track...
Why is inserting in the middle of a linked list O(1)?
...ddle of iterating through the list.
Operations on Linked Lists are often done in such a way that they aren't really treated as a generic "list", but as a collection of nodes--think of the node itself as the iterator for your main loop. So as you're poking through the list you notice as part of you...
AngularJS $http, CORS and http authentication
...authentication with AngularJS can be tricky I edited the question to share one learned lesson. First I want to thank igorzg. His answer helped me a lot. The scenario is the following: You want to send POST request to a different domain with AngularJS $http service. There are several tricky things to...
What does Python's eval() do?
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Lots of good answers here, but none describe the use of eval() in the context of its globals and locals kwargs, i.e. eval(expression, globals=None, locals=None) (see docs for eval here).
These can be used to limit the functions that are available through t...