Perl Style: Functions as Data

  • Use function pointers as function arguments or in data structures:

        # from MxScreen in TSA (see also PCB 19.12)
        %State_Table = (
            Initial  => \&show_top,
            Execute  => \&run_query,
            Format   => \&get_format,
            Login    => \&resister_login,
            Review   => \&review_selections,
            Sorting  => \&get_sorting,
            Wizard   => \&wizards_only,
        foreach my $state (sort keys %State_Table) {
            my $function = $State_Table{$state};
            my $how      = ($action == $function)
                            ? SCREEN_DISPLAY
                            : SCREEN_HIDDEN;

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Copyright © 1998, Tom Christiansen All rights reserved.



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