Junk Your Old Prototypes (2)

• Were they introduced merely to shut up people coming from other languages who expected them?

• In past three weeks I've learned about their most important use case:

        use Test::More;

        ok("cogito ergo sum",
           "Unit test written with parentheses");

        ok "caveat emptor",
           "Take advantage of fact that Test::More::ok() is prototyped -- Look Ma, no parens!"

• Prototypes let you define functions that look like Perl built-ins

  • ... and therefore don't require parentheses around their arguments