perl get list of desired parameters

Question

Is there a convention to request a list of required parameters for a function? I'd like to be able to call a subroutine which would tell me that I need to provide $phrase and $times when calling @repeat.

use strict;
use warnings;

sub repeat {
    my $phrase = shift;
    my $times = shift;
    return $phrase x $times;
    }

Answer 1

Of course, you can build some control mechanism by yourself, depending your needs. But there are some modules to help you with subroutine signatures. I will offer 3 of them:

1. signatures , the simplest
2. Kavorka, with type checking
3. Method::Signatures for OO methods