(lii) stackoverflow ruby report

This is the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2013-05-19 19:58:50 GMT

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1. What do `def +@` and `def -@` mean? - [10/1]
2. How is the __LINE__ and __FILE__ constants implemented in Ruby? - [9/1]
3. Can an "if (a == b || c == b)" statement be done shorter in Ruby - [8/4]
4. Difference between $! versus a variable with rescue - [8/1]
5. 'string' to ['s', 'st', 'str', 'stri', 'strin', 'string'] - [5/6]
6. Scope of a local variable in a block - [5/5]
7. Ruby trying to grasp a new notation. (inject(: ) vs select(&:even?); why one has &?) - [5/1]
8. Sorting multiple values by ascending and descending - [5/2]
9. Array element additions in ruby - [5/1]
10. Why is an object different inside and outside of an iteration? - [4/3]