Re: use _specific_ version

[bikeNomad]

I think the following will work with any version of Perl 5:

BEGIN {
  require 5.004;
  die "Requires only 5.004" if int($] * 1000) > 5004;
}

update: why bother with the require, either? Just use the die and !=

[particle]

yes. this makes sense to me. is there good reason to use require inside 'BEGIN', or is use okay as well? i'm not sure of the subtle differences.

~Particle

[bikeNomad]

I believe that in this case, the import is skipped, so: use 5.004; is the same as BEGIN { require 5.004 }

You want to check inside a begin block, anyway, so you do as little as possible with the wrong Perl.

Note also that the version number could have more information; 5.6.1 is encoded as 5.006001 in $]. If you care about 5.6.0 vs 5.6.1, you need to multiply by 1000000 first and compare with the right number.