Declare subroutine signatures without using a source filter! add type-contraint, name-based calling convention, without a source filter, benchmarked faster than traditional hash passing! This is a Perl 5 talk. come learn how to use the new features inspired by perl6 and how the pieces are put together within a week of hacking.

1. prototype::signatures
YAPC::EU 2008
Chia-liang Kao
xxx HERE BE DRAGONS xxx

2. Chia-liang
Kao

3. CL

4. Best Practical

5. We Make RT

6. We Make SVK

7. We Make
Prophet

8. We also do...
something mad

9. Not really our
official project

10. CLKAO
NUFFIN

11. Yuval visited me in
Taiwan

12. We need something to
hack on
• conference-driven development
• hiking-driven development

13. What would make
myself hate software
• In Perl...
• my $self = shift;
• typechecking