Re^2: How can I differentiate between 0 and whitespace in Perl?

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.

Comment on Re^2: How can I differentiate between 0 and whitespace in Perl? Select or Download Code

Replies are listed 'Best First'.
Re^3: How can I differentiate between 0 and whitespace in Perl? by codeacrobat (Chaplain) on Apr 19, 2009 at 14:40 UTC
Then this should be fixed in perlsyn, because `use feature ":5.10"` is what you find there. sigh The 5.10 vs. 5.010 syntax is nasty. `print+qq(\L@{[ref\&@]}@{['@'x7^'!#2/"!4']});`	[reply] [d/l] [select]
Re^3: How can I differentiate between 0 and whitespace in Perl? by Anonymous Monk on Apr 19, 2009 at 12:43 UTC
Then they'll comment out `#use 5.010;` and be equally confused ;)	[reply] [d/l]
Re^4: How can I differentiate between 0 and whitespace in Perl? by almut (Canon) on Apr 19, 2009 at 13:02 UTC
yeah, but it's their problem then, not the script/module author's — they're no longer innocent in this case... :)	[reply]