(xlviii) stackoverflow perl report

This is the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2012-09-30 09:58:42 GMT

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1. Will there be any difference between 42, 42.0, "42.0", "42" - [11/3]
2. Why does only one of these tell me "Modification of a read-only value attempted"? - [8/1]
3. Is there a difference between `shift` and `@_` in a subroutine? - [6/2]
4. Is there ever a reason to include the shebang line in Perl packages? - [5/2]
5. Hash merge/concatenation - [5/4]
6. Perl POD coverage for scripts and tests (not modules) - [5/2]
7. In Perl is there a way to restart the program currently running from within itself? - [5/3]
8. YAML data exchange issues between Perl and Ruby - [5/3]
9. Is there a convenience for safe dereferencing in Perl? - [5/2]
10. RSA keys in Perl - [4/1]