Messages from Perl

Transcript

1. Messages from Perl id:aereal Saturday, August 18, 12
2. id:aereal[୭?] aereal aereal aereal Saturday, August 18, 12
3. Saturday, August 18, 12
4. Saturday, August 18, 12
5. Ruby Perl JavaScript Saturday, August 18, 12
6. I/O Saturday, August 18, 12
7. I/O Saturday, August 18, 12
8. Io http://iolanguage.com/ Saturday, August 18, 12
9. ActionScript C++ PHP ALGOL Fortran COBOL Java C# Objective-C Pascal Haskell Prolog Modula-2 Brainfxxk R Scala Groovy Lua ML Smalltalk OCaml Go Saturday, August 18, 12
10. $a <=> $b Saturday, August 18, 12
11. Object-oriented Programming Saturday, August 18, 12
12. OOP? messaging polymorphism encapsulation Saturday, August 18, 12
13. Implementations Simple Expensive Saturday, August 18, 12
14. Expensive impl. (1) First-class class and objects Coupling tightly Saturday, August 18, 12
15. Expensive impl. (2) Ruby Java Saturday, August 18, 12
16. class Car # ... end Saturday, August 18, 12
17. Simple impl. (1) Use Dictionary-like data structure Coupling loosely Saturday, August 18, 12
18. Simple impl. (2) JavaScript Perl Saturday, August 18, 12
19. package Car; sub new { my ($class) = @_; bless +{}, $class; } 1; Saturday, August 18, 12
20. Dynamic dispatch Saturday, August 18, 12
21. Perl Saturday, August 18, 12
22. package Car; sub run { my ($self) = @_; print “run\n”; } Saturday, August 18, 12
23. my $car = Car->new; run $car; Saturday, August 18, 12
24. Indirect object syntax Saturday, August 18, 12
25. Implicitly take arguments Perl Python Saturday, August 18, 12
26. Ruby Saturday, August 18, 12
27. class Car def run puts “run” end end Saturday, August 18, 12
28. car = Car.new car.send(“run”) Saturday, August 18, 12
29. run = car.method(“run”) run.call Saturday, August 18, 12
30. #receiver -> object #owner -> class Method#.* Saturday, August 18, 12
31. Method instances know receiver Saturday, August 18, 12
32. Conclusions Many ‘Objects’ Implementations are constraints You should be multi-lingual Saturday, August 18, 12
33. ͓͠·͍ Saturday, August 18, 12