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How to correctly implement custom iterators and const_iterators?
...rs, we derive from the standard iterator categories to let STL algorithms know the type of iterator we've made.
In this example, I define a random access iterator and a reverse random access iterator:
//-------------------------------------------------------------------
// Raw iterator with rando...
How to apply a function to two columns of Pandas dataframe
...sing apply on the dataframe, which I am calling with axis = 1.
Note the difference is that instead of trying to pass two values to the function f, rewrite the function to accept a pandas Series object, and then index the Series to get the values needed.
In [49]: df
Out[49]:
0 ...
How to run code when a class is subclassed? [duplicate]
...f type (i.e. a class) is created by myclass = type(name, bases, clsdict).
If you want something special to happen at the moment of class-creation, then you have to modify the thing creating the class -- i.e. type. The way to do that is to define a subclass of type -- i.e. a metaclass.
A metaclass...
PHP Get Site URL Protocol - http vs https
... current site url protocol but I don't have SSL and don't know how to test if it works under https. Can you tell me if this is correct?
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What does “:=” do?
...mpanying explanation. It's not exactly possible to google its use without knowing the proper name for it.
10 Answers
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How to add a custom loglevel to Python's logging facility
...ebug level to be printed -- regardless of what the log level is set to. So if you make a new level number of 9, if you call setLevel(50), the lower level messages will erroneously be printed.
To prevent that from happening, you need another line inside the "debugv" function to check if the logg...
Python: Is it bad form to raise exceptions within __init__?
Is it considered bad form to raise exceptions within __init__ ? If so, then what is the accepted method of throwing an error when certain class variables are initialized as None or of an incorrect type?
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Spring RestTemplate - how to enable full debugging/logging of requests/responses?
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We have been using this technique for about 3 months now. It only works with RestTemplate configured with a BufferingClientHttpResponseWrapper as @sofienezaghdoudi implies. However, it does not work when used in tests using spring's mockServer framework since MockRestServiceS...
Get Root Directory Path of a PHP project
...oes depends where you use __DIR__ . It is relative to the file itself, so if in an include, inside a sub directory, it'll not return just your root directory.
– Iris
Jun 5 '15 at 14:00
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How to get everything after a certain character?
...'d like to get the rest of the string after the underscore. So for example if I have the following strings and what I'd like returned:
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