I might do something like this: 

sub mysub {
    %params = %{ +shift };
    my %known_options = ( 'this' => 1, 'that' => 2 );
    PARSE: foreach my $param ( keys %params ) {
        exists $known_options{$param} && 
            do {    #something; 
                    next PARSE; };
        die "Usage: I only know how to 'this' and 'that'\n";
    }
    # Rest of sub here...
}

[download]

Just One Way To Do It.

The values assigned to keys in %known_options are just numeric for this example, but could be coderefs, subrefs, flag values, or whatever you want.

Update: Better late than never, fixed %params = %{ +shift }; syntax.


Dave

In reply to Re: Passing by Named Parameter by davido
in thread Passing by Named Parameter by John M. Dlugosz

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