I think Corion's method is more suitable for me :-)

But I find a "bad" way to make it, and I think this way is more efficient in mem and time :-(

File: main.pl => the main source file 
require "all_hashes.pl";       # read in all the hashes
our $item = "Perl";            # this $item must be global  :-(
require "template.pl";         # perl interpolates all the variable

print $out;                    # $out is defined in template.pl
#...

[download]
File: template.pl 
my $out = "-p $act1{$item} -p $act2{$item} ...";

[download]
File: all_hashes.pl => the file contains all the hashes 
my %act1 = (
           "food"  => "eat it",
           "drink" => "drink it",
           "Perl"  => "play it");
my %act2 = (
           "food"  => "prepare it",
           "drink" => "be drunk",
           "Perl"  => "write it");
#...

[download]
It's bad, hardcoded and has many global variables, however, a simple and fast way :-(

In reply to Re^2: Interpolation of variables read from a file by phio
in thread Interpolation of variables read from a file by phio

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