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  1. or download this
    #!/usr/bin/perl5 -w
    use strict;
    
    ...
    modify_okay("some string", 1);
    
    print "And this never prints\n";
    
  2. or download this
    for (@vals) {
       my $qualifier = return_okay2($_) ? "" : " not";
       print "$_ is$qualifier okay.\n";
    }
    
  3. or download this
    print map "$_ is ".(return_okay2($_)?'':' not')." okay\n", @vals;