An alternative to the other suggestions is to use (s)printf: 

my $str = 'params.%d.arg';
                                                                      
+          
for my $idx (0 .. 9 )
{
   printf $str, $idx;
}

[download]
You will need to be careful in sanitizing the contents of $str if all or part of it is being taken from user (or otherwise untrusted) input .

/J\

In reply to Re: String interpolation by gellyfish
in thread String interpolation by hotshot

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