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PHP array_filter with arguments
...me, and is just as evil. Using it should be discouraged. The wacky class-based workaround given in the accepted answer is a better solution than using create_function() in this case.
– Charles
Mar 30 '11 at 17:43
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Storing sex (gender) in database
I want to store a user's gender in a database with as little (size/performance) cost as possible.
8 Answers
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How to install a specific version of a ruby gem?
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ruby | 1:1.9.3 | http://ftp.uk.debian.org/debian/ wheezy/main amd64 Packages
ruby | 4.5 | http://ftp.uk.debian.org/debian/ squeeze/main amd64 Packages
Then install it:
$ sudo apt-get install ruby=1:1.9.3
To check what's the current version, run:
$ gem --version # Check f...
Loadbalancing web sockets
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Put a L3 load-balancer that distributes IP packets based on source-IP-port hash to your WebSocket server farm. Since the L3 balancer maintains no state (using hashed source-IP-port) it will scale to wire speed on low-end hardware (say 10GbE). Since the distribution is determi...
#pragma pack effect
...it on a 7 byte boundary will hurt performance. But putting it on a 16, 32, 64 or 4096 byte boundary buys you nothing above what the 8 byte boundary already gave you. You'll get the same performance from the CPU, while getting much worse cache utilization for the reasons outlined in that post.
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ReactJS state vs prop
...it change over time? If not, it probably isn't state.
Can you compute it based on any other state or props in your
component? If so, it's not state.
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WebService Client Generation Error with JDK8
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Well, I found the solution. (based on http://docs.oracle.com/javase/7/docs/api/javax/xml/XMLConstants.html#ACCESS_EXTERNAL_SCHEMA)
Create a file named jaxp.properties (if it doesn't exist) under /path/to/jdk1.8.0/jre/lib and then write this line in it:
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Python int to binary string?
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For a more general philosophy, no language or library will give its user base everything that they desire. If you're working in an environment that doesn't provide exactly what you need, you should be collecting snippets of code as you develop to ensure you never have to write the same thing twice...
What are naming conventions for MongoDB?
...asz NurkiewiczTomasz Nurkiewicz
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How to sort a dataframe by multiple column(s)
... Easy enough: dd[ order(-dd[,4], dd[,1]), ], but can't use with for name-based subsetting.
– Dirk Eddelbuettel
Oct 21 '12 at 14:34
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