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Regular Expressions- Match Anything
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I don't know but every time I use this expression, I feel guilty, for not making a specific expression for my use case. If say, w+ isn't enough, I end up using .+. Luckily hasn't come back to bite me yet.
– Tushar
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Postgres: clear entire database before re-creating / re-populating from bash script
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one trick that saves me time is $ sudo -u postgres dropdb DATABASE_NAME
– Alvin
Jan 6 '14 at 23:31
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Modifying a subset of rows in a pandas dataframe
... internals to know exactly why that works, but the basic issue is that sometimes indexing into a DataFrame returns a copy of the result, and sometimes it returns a view on the original object. According to documentation here, this behavior depends on the underlying numpy behavior. I've found that ac...
How do I get a Date without time in Java?
...from Stack Overflow question Java program to get the current date without timestamp :
22 Answers
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while (1) Vs. for (;;) Is there a speed difference?
... but chances are the code inside of the loop is going to be a few thousand times more expensive than the loop itself anyway, so who cares?
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.trim() in JavaScript not working in IE
...r. Note that replace(/^\s\s*/, '').replace(/\s\s*$/, '') should be about 3 times faster than replace(/^\s+|\s+$/, '') in Firefox 2, according to one benchmark: blog.stevenlevithan.com/archives/faster-trim-javascript
– Daniel Vassallo
Feb 22 '10 at 0:53
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How to count number of files in each directory?
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sort to sort the list of foldernames
uniq -c to return the number of times each foldername has been counted
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Is there still any reason to learn AWK?
...s that would otherwise take a dozen lines to code. I cannot count how many times I have used the form: awk '{print $1, $2}'
– galaxywatcher
Jan 9 '10 at 9:21
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Numpy: find first index of value fast
... the array); last value is a needle that's not in the array. Y-axis is the time to find it.
The array had 1 million elements and tests were run 100 times. Results still fluctuate a bit, but the qualitative trend is clear: Python and f2py quit at the first element so they scale differently. Python...
Storing Image Data for offline web application (client-side storage database)
...l files!
Results
Chrome: Fetch (6.551s), Store (8.247s), Total Elapsed Time: (13.714s)
FireFox: Fetch (0.422s), Store (31.519s), Total Elapsed Time: (32.836s)
IE 10: Fetch (0.668s), Store: (0.896s), Total Elapsed Time: (3.758s)
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