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Is Java Regex Thread Safe?
...;
return matcher.matches();
}
}
see http://zoomicon.wordpress.com/2012/06/01/validating-e-mails-using-regular-expressions-in-java/ (near the end) regarding the RegEx pattern used above for validating e-mails (in case it doesn't fit ones needs for e-mail validation as it is posted here)
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Is ASCII code 7-bit or 8-bit?
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To be really pedantic, the standard is now INCITS 4-1986[R2012] because ASC formerly known as X3 mutated into NCITS then INCITS. But the 7-bit variants with about a dozen accented letters for French, German, Spanish, etc. are not ANSI/INCITS anything, rather ISO/IEC 646 and ECMA-6. ...
Database design for audit logging
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here is the link to the SQL 2012 change tracking info. msdn.microsoft.com/en-us/library/bb933994.aspx +1 for using built in functionality, no point re-inventing the wheel.
– Chris
Feb 5 '13 at 20:19
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What's the absurd function in Data.Void useful for?
...ich has an example of using absurd.
http://unknownparallel.wordpress.com/2012/07/30/pipes-to-conduits-part-6-leftovers/#running-a-pipeline
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How many socket connections can a web server handle?
...n a single Unix flavoured OS machine - https://blog.whatsapp.com/index.php/2012/01/1-million-is-so-2011/.
And finally, this one, http://highscalability.com/blog/2013/5/13/the-secret-to-10-million-concurrent-connections-the-kernel-i.html, goes into a lot of detail, exploring how even 10 million could...
Why use apparently meaningless do-while and if-else statements in macros?
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paercebalpaercebal
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What methods of ‘clearfix’ can I use?
...rs.
This clearfix was announced and explained by Thierry Koblentz in July 2012. It sheds unnecessary weight from Nicolas Gallagher's 2011 micro-clearfix. In the process, it frees a pseudo-element for your own use. This has been updated to use display: block rather than display: table (again, credit...
Good example of livelock?
...ed to create live lock example;
Original program was written by me in Apr 2012 to learn various concept of multithreading. This time I have modified it to create deadlock, race condition, livelock etc.
So let's understand the problem statement first;
Cookie Maker Problem
There are some ingredien...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
...* 1000)
# also ~/py/np/kmeans/test-kmeans.py
Some notes added 26mar 2012:
1) for cosine distance, first normalize all the data vectors to |X| = 1; then
cosinedistance( X, Y ) = 1 - X . Y = Euclidean distance |X - Y|^2 / 2
is fast. For bit vectors, keep the norms separately from the vector...
When should I use a List vs a LinkedList
...nked list has become somewhat fragmented in memory. kjellkod.wordpress.com/2012/02/25/…
– RenniePet
Dec 18 '14 at 22:40
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