Object-Oriented Programming Basics with Smalltalk

Presented at CodeMash 2016

Transcript

1. SMALLTALK OBJECT-ORIENTED PROGRAMMING BASICS
2. @statonjr OOP Basics with Smalltalk 100 Dealerships 10,000+ Employees
3. @statonjr OOP Basics with Smalltalk OVERVIEW
4. @statonjr OOP Basics with Smalltalk What is OBJECT-ORIENTED PROGRAMMING?
6. @statonjr OOP Basics with Smalltalk 1966
7. @statonjr OOP Basics with Smalltalk 1970
8. @statonjr OOP Basics with Smalltalk 1972
9. @statonjr OOP Basics with Smalltalk Six Main Ideas of Smalltalk
10. @statonjr OOP Basics with Smalltalk Everything is an object
11. @statonjr OOP Basics with Smalltalk Objects communicate by sending and receiving messages
12. @statonjr OOP Basics with Smalltalk Objects have their own memory
13. @statonjr OOP Basics with Smalltalk Every object is an instance of a class
14. @statonjr OOP Basics with Smalltalk The class holds the shared behavior for its instances
15. @statonjr OOP Basics with Smalltalk To eval a program list, control is passed to the first object and the remainder is treated as its message
16. @statonjr OOP Basics with Smalltalk 1976
17. @statonjr OOP Basics with Smalltalk
18. @statonjr OOP Basics with Smalltalk Everything is an object
19. @statonjr OOP Basics with Smalltalk Data Code
20. @statonjr OOP Basics with Smalltalk Data Code Methods
21. @statonjr OOP Basics with Smalltalk Data Code Methods Variables
22. GENERALLY, WE DON'T WANT THE PROGRAMMER TO BE MESSING AROUND WITH STATE, WHETHER SIMULATED OR NOT. Alan Kay THE EARLY HISTORY OF SMALLTALK
23. @statonjr OOP Basics with Smalltalk Objects communicate by sending and receiving messages
24. @statonjr OOP Basics with Smalltalk SENDER RECEIVER Message Return Value
25. @statonjr OOP Basics with Smalltalk Every object is an instance of a class
26. @statonjr OOP Basics with Smalltalk Class Instances
27. @statonjr OOP Basics with Smalltalk Class Instance Class Methods Class Variables Instance Methods Instance Variables Instance Methods Instance Variables
28. @statonjr OOP Basics with Smalltalk The class holds the shared behavior for its instances
29. @statonjr OOP Basics with Smalltalk COMPOSITION
30. @statonjr OOP Basics with Smalltalk INHERITANCE
31. @statonjr OOP Basics with Smalltalk name age grade Person Student
32. @statonjr OOP Basics with Smalltalk POLYMORPHISM
33. @statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX
34. @statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX
35. @statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX Tokens: Identifiers, Numbers, ‘Strings’, “Comments”, Binary Operators, Keywords, Special Tokens
36. @statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX Special Tokens: #:^’|”;()[] Tokens: Identifiers, Numbers, ‘Strings’, “Comments”, Binary Operators, Keywords, Special Tokens
37. @statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX Special Tokens: #:^’|”;()[] Tokens: Identifiers, Numbers, ‘Strings’, “Comments”, Binary Operators, Keywords, Special Tokens Reserved Words: nil false true self super
38. @statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX Special Tokens: #:^’|”;()[] Tokens: Identifiers, Numbers, ‘Strings’, “Comments”, Binary Operators, Keywords, Special Tokens Reserved Words: nil false true self super Syntactic Forms: Unary messages, Binary messages, Keyword messages, Block closures, Return Value, Method definition, Assignment, Cascade
39. @statonjr OOP Basics with Smalltalk DEMO
40. @statonjr OOP Basics with Smalltalk RESOURCES http://pharo.org http://pharobyexample.org Smalltalk-80: The Language and Its Implementation http://files.pharo.org/books/ ProfStef go