Object-Oriented Programming Basics with Smalltalk

SMALLTALK OBJECT-ORIENTED PROGRAMMING BASICS

@statonjr OOP Basics with Smalltalk 100 Dealerships 10,000+ Employees

@statonjr OOP Basics with Smalltalk OVERVIEW

@statonjr OOP Basics with Smalltalk What is OBJECT-ORIENTED PROGRAMMING?

@statonjr OOP Basics with Smalltalk 1966

@statonjr OOP Basics with Smalltalk Six Main Ideas of Smalltalk

@statonjr OOP Basics with Smalltalk Everything is an object

@statonjr OOP Basics with Smalltalk Objects communicate by sending and
receiving messages

@statonjr OOP Basics with Smalltalk Objects have their own memory

@statonjr OOP Basics with Smalltalk Every object is an instance
of a class

@statonjr OOP Basics with Smalltalk The class holds the shared
behavior for its instances

@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

@statonjr OOP Basics with Smalltalk

@statonjr OOP Basics with Smalltalk Everything is an object

@statonjr OOP Basics with Smalltalk Data Code

@statonjr OOP Basics with Smalltalk Data Code Methods

@statonjr OOP Basics with Smalltalk Data Code Methods Variables

GENERALLY, WE DON'T WANT THE PROGRAMMER TO BE MESSING AROUND
WITH STATE, WHETHER SIMULATED OR NOT. Alan Kay THE EARLY HISTORY OF SMALLTALK

@statonjr OOP Basics with Smalltalk Objects communicate by sending and
receiving messages

@statonjr OOP Basics with Smalltalk SENDER RECEIVER Message Return Value

@statonjr OOP Basics with Smalltalk Every object is an instance
of a class

@statonjr OOP Basics with Smalltalk Class Instances

@statonjr OOP Basics with Smalltalk Class Instance Class Methods Class
Variables Instance Methods Instance Variables Instance Methods Instance Variables

@statonjr OOP Basics with Smalltalk The class holds the shared
behavior for its instances

@statonjr OOP Basics with Smalltalk COMPOSITION

@statonjr OOP Basics with Smalltalk INHERITANCE

@statonjr OOP Basics with Smalltalk name age grade Person Student

@statonjr OOP Basics with Smalltalk POLYMORPHISM

@statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX

@statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX Tokens: Identiﬁers, Numbers,
‘Strings’, “Comments”, Binary Operators, Keywords, Special Tokens

@statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX Special Tokens: #:^’|”;()[]
Tokens: Identiﬁers, Numbers, ‘Strings’, “Comments”, Binary Operators, Keywords, Special Tokens

Tokens: Identiﬁers, Numbers, ‘Strings’, “Comments”, Binary Operators, Keywords, Special Tokens Reserved Words: nil false true self super

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

@statonjr OOP Basics with Smalltalk DEMO

@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

Object-Oriented Programming Basics with Smalltalk

Object-Oriented Programming Basics with Smalltalk

More Decks by Larry Staton Jr.

Other Decks in Programming

Featured

Transcript