> I've checked if the library that I'm using to learn perl use this feature and it doesn't!

Sure it does. You need to follow the use clauses, line #11 says 

use JSON;

[download]

which in turn, on line #9, says 

BEGIN {

[download]

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

[download]

In reply to Re^3: Template to create modules by choroba
in thread Template to create modules by guiwp

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