20 best Perl questions at stackoverflow in 2012

This is the 20 most rated questions at 2012 Stack Overflow last year.
Between brackets: question score & answers count
Built date: 2013/01/01 10:25:20 GMT

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1. Why is this program valid? I was trying to create a syntax error - [142/3]
2. Seeking clarification on apparent contradictions regarding weakly typed languages - [98/9]
3. Is Try::Tiny still recommended for exception handling in Perl 5.14 or later? - [45/4]
4. deobfuscating Perl code - [39/1]
5. Perl: while with no conditional - [33/3]
6. Kleene's Star: why does $_ = "a"; s/a*/e/g produce: ee - [30/5]
7. STL map in Perl using SWIG - [30/2]
8. Why does Perl compile diagnostics.pm if I have no diagnostics in my code? - [21/1]
9. Why does Perl's string multiplication not warn on undef? - [20/1]
10. Perl three dot operator ... examples - [19/3]
11. Should we consider using range [a-z] as a bug? - [19/2]
12. Use cases for ithreads (interpreter threads) in Perl and rationale for using or not using them? - [19/2]
13. Does python have a "use strict;" and "use warnings;" like in perl? - [17/2]
14. How does this perl one-liner actually work? - [17/2]
15. text processing - python vs perl performance - [17/6]
16. Perl's file test operator -f returns true for symbolic links - [16/3]
17. How to Embed the perl interpreter in a C# Program - [15/1]
18. Perl Regular Expression - What does gc modifier means? - [15/2]
19. Is there a tool to check a Perl script for unnecessary use statements? - [15/2]
20. Best algorithm to find the minimum absolute difference between two numbers in an array - [14/7]