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
41. ✓ Heritage
42. ✓ Heritage ✓ Weirdness
43. ✓ Heritage ✓ Weirdness ✓ Exploration
44. Why is wh dead? SMALLTALK
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