(xxv) stackoverflow ruby report

This is the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2012-11-12 22:24:30 GMT

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1. Group Ruby array by specific values - [9/5]
2. How can I find a memory leak on Heroku? - [7/2]
3. What does the o modifier for a regexp mean? - [7/1]
4. How can I convert Ruby to Lua? - [6/2]
5. Empty strings at the beginning and end of split - [5/2]
6. Is changing `require` to concatenate Ruby files brilliant or crazy? - [5/2]
7. MRI Internals: detailed explanation of rb_id2str - [5/0]
8. Sanitize CSS in PHP - Ruby Alternatives an option? - [4/0]
9. convert ip address to 32 bit integer in ruby - [4/2]
10. Can't understand "unless" keyword in Ruby - [4/3]