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Most pythonic way to delete a file which may not exist
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A more pythonic way would be:
try:
os.remove(filename)
except OSError:
pass
Although this takes even more lines and looks very ugly, it avoids the unnecessary call to os.path.exists() and follows the python convention of overusing exceptions.
It may be worthwhile to write a functio...
SQL command to display history of queries
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try
cat ~/.mysql_history
this will show you all mysql commands ran on the system
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This Handler class should be static or leaks might occur: IncomingHandler
... Note: after making the IncomingHandler static, I was getting the error "The constructor MyActivity.IncomingHandler() is undefined." on the line "final Messenger inMessenger = new Messenger(new IncomingHandler());". The solution is to change that line to "final Messenger inMessenger = new M...
Easiest way to activate PHP and MySQL on Mac OS 10.6 (Snow Leopard), 10.7 (Lion), 10.8 (Mountain Lio
...c/apache2/libphp5.so"
And uncomment it (remove the #).
Download and install the latest MySQL version from mysql.com. Choose the x86_64 version for Intel (unless your Intel Mac is the original Macbook Pro or Macbook, which are not 64 bit chips. In those cases, use the 32 bit x86 version).
Install...
How can I dynamically set the position of view in Android?
... position of this view relative to its parent. This method is meant to be called by the layout system and should not generally be called otherwise, because the property may be changed at any time by the layout. - so maybe thats not that good an idea ;)
– katzenhut
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Assigning a variable NaN in python without numpy
...aking) be said to be equal to one another -- see What is the rationale for all comparisons returning false for IEEE754 NaN values? for more details and information.
Instead, use math.isnan(...) if you need to determine if a value is NaN or not.
Furthermore, the exact semantics of the == operation...
How do I convert seconds to hours, minutes and seconds?
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In python 3.5.2, I get a TypeError. I'm formatting a time.time()-start variable. Any insight? TypeError: non-empty format string passed to object.__format__
– medley56
Sep 25 '17 at 16:40
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“You are on a branch yet to be born” when adding git submodule
...ory, and when I attempt to add this particular repo Git gives me a strange error I've never seen before:
4 Answers
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What's the opposite of head? I want all but the first N lines of a file
Given a text file of unknown length, how can I read, for example all but the first 2 lines of the file? I know tail will give me the last N lines, but I don't know what N is ahead of time.
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Can I specify multiple users for myself in .gitconfig?
... * )
printf "\n» pre-commit hook: unknown error\n» Quitting.\n"
exit 1
;;
esac
fi
done
else
printf "\n»» An Intermission\n» No remote repository set. Using local fallback identity:\n"
print...