Switch Using for and do{} Even More Creatively

• Sometimes, aesthetics counts. :-)

      for ($^O) {
          *struct_flock =      do                  {
                        /bsd/  &&  \&bsd_flock
                               ||
                    /linux/    &&    \&linux_flock
                               ||
                  /sunos/      &&      \&sunos_flock
                               ||
           die "unknown operating system $^O, bailing out";
          };
      }