A Small Smalltalk Talk [RUG::B edition]

Transcript

1. A Small talk SMALLTALK Denis Defreyne / @ddfreyne / denis@stoneship.org

2. Bad news: Smalltalk is dead. SMALLTALK

3. Three reasons to look into SMALLTALK

4. 1. Smalltalk is is worth learning because of its heritage.

   SMALLTALK

5. 2. Smalltalk is is worth learning because it is weird.

   SMALLTALK

6. 3. Smalltalk is is worth learning because it encourages exploration.

   SMALLTALK

7. HERITAGE

8. is like Ruby SMALLTALK RUBY

9. is like Ruby RUBY SMALLTALK

10. Smalltalk ’s model of object orientation is identical to ’s

    RUBY SMALLTALK

11. 'Hello'.upcase 'Hello' asUppercase. RUBY SMALLTALK

12. person = Person.new person.first_name = 'Denis' 
 person := Person

    new. person firstName: 'Denis'. SMALLTALK RUBY

13. research_paper.respond_to?(:complete?) research_paper.send(:add_random_paragraph) 
 researchPaper respondsTo: #isComplete. researchPaper perform: #addRandomParagraph. SMALLTALK

    RUBY

14. people.each { |person| self.send_spam_to(person) } people do: [ :person |

    self sendSpamTo: person ]. people do: [ :each | self sendSpamTo: each ]. RUBY SMALLTALK

15. people.each { |person| self.send_spam_to(person) } people do: [ :person |

    self sendSpamTo: person ]. people do: [ :each | self sendSpamTo: each ]. RUBY SMALLTALK

16. people.select { |person| person.adult? } people.select(&:adult?) 
 people select: [

    :person | person isAdult ]. people select: #isAdult. RUBY SMALLTALK

17. people select: #isAdult. people detect: #isAdult. people reject: #isAdult. people

    collect: #firstName. people inject: 0 into: [ :memo :each | memo + each age ] SMALLTALK

18. is a cleaner SMALLTALK RUBY

19. poke = lambda { |person| person.poke } people.each(&poke) 
 poke

    := [ :person | person poke ]. people do: poke. RUBY SMALLTALK

20. if students.empty? cancel_class end 
 students isEmpty ifTrue: [self cancelClass].

    RUBY SMALLTALK

21. as inspiration SMALLTALK

22. WEIRDNESS

23. (at all) is not like SMALLTALK RUBY

24. Ruby RUBY

25. gem RUBY

26. Smalltalk SMALLTALK

27. Smalltalk SMALLTALK

28. Smalltalk SMALLTALK =

29. Smalltalk SMALLTALK – your application =

30. Smalltalk SMALLTALK – your application – standard library =

31. Smalltalk SMALLTALK – your application – standard library – other

    libraries =

32. Smalltalk SMALLTALK – your application – standard library – other

    libraries – compiler =

33. Smalltalk SMALLTALK – your application – standard library – other

    libraries – compiler – IDE =

34. Smalltalk SMALLTALK Pharo.image

35. Smalltalk SMALLTALK Pharo.image FRESH

36. Smalltalk SMALLTALK COPY Pharo.image FRESH

37. DEMO

38. EXPLORATION

39. DEMO

40. None

41. ✓ Heritage

42. ✓ Heritage ✓ Weirdness

43. ✓ Heritage ✓ Weirdness ✓ Exploration

44. Why is wh dead? SMALLTALK

45. None

46. 1. The Smalltalk environment is isolated.

47. 1. The Smalltalk environment is 2. The Smalltalk community suffers

    from NIH.

48. 1. The Smalltalk environment is 2. The Smalltalk community suffers

    from 3. Smalltalk isn’t revolutionary anymore.

49. Q & A

50. @ddfreyne denis@stoneship.org Denis Defreyne Former Smalltalk developer DENIS DEFREYNE

51. None