The document summarizes an Object Oriented Programming workshop with Ruby. The workshop covers introductions to programming, OOP principles like encapsulation and inheritance, and hands-on examples in Ruby. It demonstrates classes, objects, and polymorphism in Ruby code. The workshop aims to teach OOP concepts and their implementation in Ruby.

1. < StartupDecode workshop : #02 />
Object Oriented Programming
with Ruby
Amine Sadry
@donaminos
www.startupdecode.com
meetup.com/startupDecode @startupdecode /startupDecode /user/startupDecode

2. < Program />
1. What is Programming ?
2. OOP Principle
3. Hands-on Ruby
4. Encapsulation
5. Inheritance
6. polymorphism
7. Apéro Networking
www.startupdecode.com

3. What is
programming?

4. < Machine language />
www.startupdecode.com

5. < Assembler language />
www.startupdecode.com
2000 DEF PROCasm(pass,org)
2010 P%=org
2020 [ OPT pass
2030 ADR R0, message
2040 SWI OS_Write0
2050 MOV PC, R14
2060 .message
2070 EQUS "Hello, World!" + CHR$(0)
2080 ALIGN
2090 ]
2100 ENDPROC
1000 REM Hello World using a mix of
BBC Basic and ARM assembler
1010 DIM org 100
1020 OS_Write0 = &2
1030 FOR pass=0 TO 3 STEP 3
1040 PROCasm(pass,org)
1050 NEXT pass
1060 CALL org
1070 END
1080

6. < High-level language />
void main (void)
{
printf ("Hello n");
if ( x == y )
printf("x equal y n");
}
www.startupdecode.com
10100110
01010001
11100101
Compile

7. < Procedural programming />
main(){
var data1, data2;
procedure_1();
procedure_2(data1);
procedure_3(data1, data2);
print data2;
}
www.startupdecode.com
procedure_1(){
...
}
procedure_2(param){
….
}
procedure_3(p1, p2){
….
}

8. Object Oriented
Programming

9. < OOP principle 1/3 />
www.startupdecode.com
Properties:
● Brand
● Color
Actions:
● Strart
● Accelerate
● Stop

10. < OOP principle 2/3 />
www.startupdecode.com
Properties:
● Name
● Email
● …
Actions:
● Move
● Text
● …

11. < OOP principle 3/3 />
www.startupdecode.com
Class
Attributes
Methods

12. Hands-on Ruby

13. < Classes & objects />
Create a class Create an object Get object info
class User
...
end
www.startupdecode.com
me = User.new
puts me.class
puts me.object_id

14. < Ruby code />
www.startupdecode.com

15. Encapsulation

16. < Encapsulation 1/2 />
www.startupdecode.com
class User
def name(name)
@name = name
end
def name
@name
end
end

17. < Ruby code />
www.startupdecode.com

18. < Encapsulation 2/2 />
class User
def set_name(name)
www.startupdecode.com
@name = name
end
def get_name
@name
end
end
class User
attr_accessor :name
end
class User
attr_reader :name
attr_writer :name
end

19. < Ruby code />
www.startupdecode.com

20. Inheritance

21. < Inheritance />
www.startupdecode.com
B
A
C
A A

22. < Inheritance />
class User
attr_accessor :name
def login
“I logged in!”
end
def logout
“I logged out!”
end
end
www.startupdecode.com
class Freelance < User
def add_resume
“I added a resume!”
end
end
class Entreprise < User
def add_offer
“I added an offer!”
end
end

23. < Ruby code />
www.startupdecode.com

24. Polymorphism

25. < Polymorphism />
www.startupdecode.com
B
A
C
A’ A”

26. < Polymorphism />
class User
def login
“I logged in!”
end
def logout
“I logged out!”
end
def signup
www.startupdecode.com
“Basic signup!”
end
end
class Freelance < User
def add_resume
“I added a resume!”
end
def signup
“Free to signup!”
end
end

27. < Polymorphism />
class User
def login
“I logged in!”
end
def logout
“I logged out!”
end
def signup
www.startupdecode.com
“Basic signup!”
end
end
class Entreprise < User
def add_offer
“I added an offer!”
end
def signup
“100$ to signup!”
end
end

28. < Ruby code />
www.startupdecode.com

29. < StartupDecode />
Next workshop:
HTML 5
A bientôt
meetup.com/startupDecode @startupdecode /startupDecode /user/startupDecode