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How do I pass a method as a parameter in Python

...call__() is meant to be implemented, not to be invoked from your own code. If you wanted method1 to be called with arguments, then things get a little bit more complicated. method2 has to be written with a bit of information about how to pass arguments to method1, and it needs to get values for thos...
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What does $_ mean in PowerShell?

...erty -Name Bar -Value $_.Name -PassThru | Select Bar ... Well, it can work if you have a $_ in the scope where you're executing that pipeline. But that's very different from what you usually mean when trying to write something like that. – Joey Nov 6 '15 at 17:...
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Timeout function if it takes too long to finish [duplicate]

... Beware that this is not thread-safe: if you're using multithreading, the signal will get caught by a random thread. For single-threaded programs though, this is the easiest solution. – Wim Feb 17 '10 at 17:03 ...
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Is there any difference between “foo is None” and “foo == None”?

Is there any difference between: 12 Answers 12 ...
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Is there a W3C valid way to disable autocomplete in a HTML form?

...atically turns off autocompletion (as do some other browsers, as far as I know). Update As this answer still gets quite a few upvotes, I just wanted to point out that in HTML5, you can use the 'autocomplete' attribute on your form element. See the documentation on W3C for it. ...
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Age from birthdate in python

...etime import dateutil def birthday(date): # Get the current date now = datetime.datetime.utcnow() now = now.date() # Get the difference between the current date and the birthday age = dateutil.relativedelta.relativedelta(now, date) age = age.years return age ...
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How do I find the location of my Python site-packages directory?

...s where Python installs your local packages: python -m site --user-site If this points to a non-existing directory check the exit status of Python and see python -m site --help for explanations. Hint: Running pip list --user or pip freeze --user gives you a list of all installed per user site-pa...
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Filter rows which contain a certain string

... option 1 is to know for sure that dplyr loaded last. option 2 is you prefix dplyr::filter. – userJT Mar 1 '16 at 14:30 ...
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std::enable_if to conditionally compile a member function

...ying to get a simple example to work to understand how to use std::enable_if . After I read this answer , I thought it shouldn't be too hard to come up with a simple example. I want to use std::enable_if to choose between two member-functions and allow only one of them to be used. ...
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Assignment inside lambda expression in Python

... for main in [lambda: sub( ['loop' for factor in [1, 2, 3] if sub( ['def' for my_radius, my_height in [[10 * factor, 20 * factor]] for my_cylinder in [Cylinder(my_radius, my_height)]], echo(u"A cylinder with a r...