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Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
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answered Mar 10 '11 at 19:33
Elliott HughesElliott Hughes
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What's the difference between findAndModify and update in MongoDB?
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@MarkUnsworth open a support case with 10gen - if there is a bug in locking with findAndModify I can guarantee you engineers would want to fix it asap. If that was the case though we would see a lot of people report this behavior but findAndModify works as designe...
How exactly does the “Specific Version” property of an assembly reference work in Visual Studio?
...t the "Specific Version" property of assembly references in Visual Studio 2010. After a few experiments with unexpected results I set out to learn as much as possible about how the property works. Even SO, it appears to me, does not have all the answers, so here is my attempt at self-answering the q...
Using GPU from a docker container?
...xt as Docker has dropped LXC as the default execution context as of docker 0.9.
Instead it's better to tell docker about the nvidia devices via the --device flag, and just use the native execution context rather than lxc.
Environment
These instructions were tested on the following environment:
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Numpy `logical_or` for more than two arguments
...ith a scalar instead of an array. So:
>>> np.any((x, y, z), axis=0)
array([ True, True, True, False], dtype=bool)
As you might expect, logical_and is similar—you can chain it, np.reduce it, functools.reduce it, or substitute all with an explicit axis.
What about other operations,...
Finding the number of days between two dates
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$now = time(); // or your date as well
$your_date = strtotime("2010-01-31");
$datediff = $now - $your_date;
echo round($datediff / (60 * 60 * 24));
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Reading GHC Core
...ore to program GHC.
GHC Core fits in the compiler pipeline (as it was in 2002, sans-LLVM and CMM):
The primary documents to learn about GHC Core are:
An External Representation for the GHC Core Language, Tolmach, 2001
ghc/compiler/CoreSyn, the GHC definition itself
Secrets of the Glasgow Haske...
Finding the PHP File (at run time) where a Class was Defined
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answered Mar 10 '10 at 19:59
GordonGordon
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How do I get a list of column names from a psycopg2 cursor?
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Matching a space in regex
...s is (note the space inside the regex):
$newtag = preg_replace ("/[^a-zA-Z0-9 ]/", "", $tag);
# ^ space here
If you also want trickery to ensure there's only one space between each word and none at the start or end, that's a little more complicated (and probably...