Unfortunately we have some servers with perl 5.6 and 5.8 on them. I want my script to be able to still run with the older versions, but if it is running something newer I want it to use an efficient module. So basically I want to do something like: 
if ($] > 5.010) {
  use Super::Cool::Module;
  $supercool = 2;
} elsif (($] <= 5.010) && ($] > 5.008)) {
  use Almost::Cool::Module;
  $supercool = 1;
} elsif ($] <= 5.008) {
  print "No module available for this ancient perl\n";
  $supercool = 0;
## insert code here to duplicate the functionality of the newer module
+s.
}

### then later in the code
if ($supercool == 2) {
# do stuff with the super cool functions

} elsif ($supercool == 1)
# do stuff with the less cool functions

} else {
# 10000 lines of code to implement the super cool functions in ancient
+ perl.

}

[download]
Is this really the best way to go? Just doing this psudocode here looks really messy to maintain.

In reply to The "right" way to make your script run with old versions of perl by xorl

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