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What does “xmlns” in XML mean?
...t it "means" when an XML parser reads the document.
NOTE: You cannot actually use the full namespace URI in place of the namespace prefix in an XML instance document.
Check out this tutorial on namespaces: http://www.sitepoint.com/xml-namespaces-explained/
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Writing a compiler in its own language
... compiler for language Foo cannot itself be written in Foo. More specifically, the first compiler for language Foo cannot be written in Foo, but any subsequent compiler could be written for Foo .
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Is there a visual profiler for Python? [closed]
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A friend and I have written a Python profile viewer called SnakeViz that runs in a web browser. If you are already successfully using RunSnakeRun SnakeViz may not add that much value, but SnakeViz is much easier to install.
Edit: SnakeViz supports Python 2 and 3 and works on a...
What is a “static” function in C?
...n. For (C++/Java/...) class methods, static means that this method can be called on the class itself, no instance of that class necessary.
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What is the difference between an Azure Web Site and an Azure Web Role
...pps (formerly Web Sites):
Ability to run elevated startup scripts to install apps, modify registry settings, install performance counters, fine-tune IIS, etc.
Ability to split an app up into tiers (maybe Web Role for front end, Worker Role for backend processing) and scale independently
Ability to...
Can't ignore UserInterfaceState.xcuserstate
...ked"
Alternatively you can use the -a option to git commit that will add all files that have been modified or deleted.
Once you've removed the file from git, it will respect your .gitignore.
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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
... a matrix of size 2^n is slower than transposing one of size 2^n+1 . For small values of n , the difference is not major.
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How to update a pull request from forked repo?
...to that forked repo. I then opened a pull request. The pull request listed all the changes I wanted.
5 Answers
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How to initialize an array in Java?
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Actually, the primary reason it is incorrect is that it is a syntax error! The AIOB would only happen if the syntax was acceptable.
– Stephen C
Dec 21 '09 at 4:07
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Regular expression to match DNS hostname or IP Address?
...o be escaped with \.
ValidHostnameRegex is valid as per RFC 1123. Originally, RFC 952 specified that hostname segments could not start with a digit.
http://en.wikipedia.org/wiki/Hostname
The original specification of
hostnames in RFC
952,
mandated that labels could not start
with a d...