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The difference between the Runnable and Callable interfaces in Java
What is the difference between using the Runnable and Callable interfaces when designing a concurrent thread in Java, why would you choose one over the other?
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Python argparse command line flags without arguments
...a look at http://docs.python.org/dev/library/argparse.html#action (specifically store_true and store_false)
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-w', action='store_true')
where action='store_true' implies default=False.
Conversely, you could haveaction='store_...
What is the correct XPath for choosing attributes that contain “foo”?
Given this XML, what XPath returns all elements whose prop attribute contains Foo (the first three nodes):
9 Answers
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how to disable DIV element and everything inside [duplicate]
I need to disable a DIV and all it's content using Javascript. I can swear that doing a simple
5 Answers
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MongoDB - admin user not authorized
I am trying to add authorization to my MongoDB.
I am doing all this on Linux with MongoDB 2.6.1.
My mongod.conf file is in the old compatibility format
(this is how it came with the installation).
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When to use Cast() and Oftype() in Linq
...ly the elements that can safely be cast to type x.
Cast - will try to cast all the elements into type x. if some of them are not from this type you will get InvalidCastException
EDIT
for example:
object[] objs = new object[] { "12345", 12 };
objs.Cast<string>().ToArray(); //throws InvalidCas...
Comparison of CI Servers? [closed]
...oyments, functional tests, etc. To help with that planning I created this wallchart on the Elements of Enterprise CI (PDF; no registration required). Please don't let the "E-word" put you off; I just mean stuff beyond the basic fast feedback CI build. :)
It isn't tool specific but lists a variety o...
pandas DataFrame: replace nan values with average of columns
...amount imputed for the mean using this?
– bernando_vialli
Jun 8 '18 at 14:29
25
Instead of df=df....
How can I remove the top and right axis in matplotlib?
... @EricBurel I find the Matplotlib documentation poorly designed. I generally find it easier to understand its API from examples. This is why StackOverflow is so important! I wish the Matplotliob documentation was written with the clear and well-organized approach of Scipy and Numpy.
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How to easily truncate an array with JavaScript?
Linq has a convenient operator method called Take() to return a given number of elements in anything that implements IEnumerable . Is there anything similar in jQuery for working with arrays?
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