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How do I get a value of datetime.today() in Python that is “timezone aware”?
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In the standard library, there is no cross-platform way to create aware timezones without creating your own timezone class.
On Windows, there's win32timezone.utcnow(), but that's part of pywin32. I would rather suggest to use the pytz library, which has a constantly updat...
Why use a prime number in hashCode?
...t wondering why is that primes are used in a class's hashCode() method? For example, when using Eclipse to generate my hashCode() method there is always the prime number 31 used:
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Recursive lambda functions in C++11
...tween the auto version and the fully specified type version. The auto keyword infers its type from whatever it's initialized with, but what you're initializing it with needs to know what its type is (in this case, the lambda closure needs to know the types it's capturing). Something of a chicken-a...
Rails extending ActiveRecord::Base
I've done some reading about how to extend ActiveRecord:Base class so my models would have some special methods. What is the easy way to extend it (step by step tutorial)?
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How to define two angular apps / modules in one page?
... see that always only the first module, referenced in the html code, will work correctly, whereas the second is not recognized by angular.
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How to detect online/offline event cross-browser?
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Currently in 2011, the various browser vendors cannot agree on how to define offline. Some browsers have a Work Offline feature, which they consider separate to a lack of network access, which again is different to internet access. The whole thing is a mess. Some brow...
What is the combinatory logic equivalent of intuitionistic type theory?
...dering if it was possible to replace lambda calculus in these with combinatory logic. With Haskell this seems possible using the S and K combinators, thus making it point-free. I was wondering what the equivalent was for Agda. I.e., can one make a dependently typed functional programming language eq...
Can I export a variable to the environment from a bash script without sourcing it?
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Is there any way to access to the $VAR by just executing export.bash without sourcing it ?
Quick answer: No.
But there are several possible workarounds.
The most obvious one, which you've already mentioned, is to use source or . to execute the script in the context of the calling ...
Why are Docker container images so large?
I made a simple image through Dockerfile from Fedora (initially 320 MB).
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Applying a function to every row of a table using dplyr?
When working with plyr I often found it useful to use adply for scalar functions that I have to apply to each and every row.
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