Object-Oriented Programming Basics with Smalltalk

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SMALLTALK OBJECT-ORIENTED PROGRAMMING BASICS

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

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@statonjr OOP Basics with Smalltalk OVERVIEW

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

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@statonjr OOP Basics with Smalltalk 1966

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@statonjr OOP Basics with Smalltalk 1970

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@statonjr OOP Basics with Smalltalk 1972

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@statonjr OOP Basics with Smalltalk Six Main Ideas of Smalltalk

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@statonjr OOP Basics with Smalltalk Everything is an object

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

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@statonjr OOP Basics with Smalltalk Objects have their own memory

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

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

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@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

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@statonjr OOP Basics with Smalltalk 1976

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@statonjr OOP Basics with Smalltalk

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@statonjr OOP Basics with Smalltalk Everything is an object

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@statonjr OOP Basics with Smalltalk Data Code

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@statonjr OOP Basics with Smalltalk Data Code Methods

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@statonjr OOP Basics with Smalltalk Data Code Methods Variables

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

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

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@statonjr OOP Basics with Smalltalk SENDER RECEIVER Message Return Value

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

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@statonjr OOP Basics with Smalltalk Class Instances

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

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

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@statonjr OOP Basics with Smalltalk COMPOSITION

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@statonjr OOP Basics with Smalltalk INHERITANCE

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@statonjr OOP Basics with Smalltalk name age grade Person Student

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@statonjr OOP Basics with Smalltalk POLYMORPHISM

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@statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX

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@statonjr OOP Basics with Smalltalk SMALLTALK SYNTAX

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

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

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@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

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@statonjr OOP Basics with Smalltalk DEMO

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@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