Side note:  I'd use 5.010; instead of use feature ":5.10";.  The net effect is the same, but the innocent/inexperienced user of an older version of Perl will probably appreciate a clear message indicating what the problem is, i.e. 

$ perl -M5.010 -e1
Perl v5.10.0 required--this is only v5.8.8, stopped at ...

vs.

$ perl -Mfeature=:5.10 -e1
Can't locate feature.pm in @INC (@INC contains: ...

[download]

with no mention of 5.10 in the latter.

In reply to Re^2: How can I differentiate between 0 and whitespace in Perl? by almut
in thread How can I differentiate between 0 and whitespace in Perl? by boom

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