Final Exam

1
Final Exam
2
Sources of Info

• Text (chapters 1 -30)
• Powerpoint Slides (all sets)
• Workspace examples
• Smalltalk Mutual Support List
• Your Projects

3
Objects

• concepts
• terms and definitions
• object
• encapsulation
• characteristics and behavior
• polymorphism
• etc.
• benefits of the use of the object model

4
Classes and Instances

• Class Hierarchy
• Use of the Class Browser
• Common classes
• Object
• Magnitude
• Float
• String
• Collection
• Date
• etc.
• Common methods for common classes

5
Structure of Smalltalk Expressions

• receiver
• selector
• argument(s)

6
Smalltalk Statements

• assignment statements
• punctuation
• cascading

7
Smalltalk Conventions

• class names
• variable names
• method names

8
Messages

• unary
• binary
• keyword
• precedence

9
Control Structures

• sequence
• selection
• iteration
• implementation of these in ST

10
Conditional Statements

• Booleans
• Boolean, True, False
• statements that evaluate to a Boolean

11
Blocks

• defining them
• using them in conditional statements
• using them in iteration statements
• zero argument blocks and one argument blocks

12
Writing ST Conditional Statements

• logic
• the way ifTrue , ifFalse , and
  ifTrueifFalse work
• types of statements

13
Formatting Conditional Statements

• (a b)
• ifTrue ..
• ((c lt d) (f gt g))
• ifTrue
• ..
• ifFalse
• ..
• .

14
Iteration

• logic
• test before and test after loops
• how whileTrue and whileFalse operate
• use of blocks

15
Types of Selectors for Looping

• timesRepeat
• "For" loops
• Ex 1 to 10 do thisNum .
• "While" loops
• Ex block1 whileTrue block2.
• "Repeat Until" loops
• Ex block1 whileTrue block2.

16
Collections

• types (bags, sets, arrays, strings, ordered
  collections, sorted collections, dictionaries)
• remember the chart
• know
• indexed?
• fixed number of elements?
• duplicates allowed?
• accessed by key?
• restrictions on types of values?

17
Collection Methods

• new
• size
• add
• at
• atput
• asOrderedCollection, asBag, etc.
• do
• select

18
Use of Collections

• Creating a new array or ordered collection
• Adding up the values in an array or ordered
  collection
• Performing some operation on each element of a
  collection
• Creating new collections out of existing
  collections

19
Dictionaries

• Characteristics of a dictionary (i.e., unique
  keys, etc.)
• Creating a new dictionary
• Storing objects in the dictionary
• Retrieving objects from the dictionary

20
Files

• Specifying the name and location of a file on
  disk
• opening a file to read or write openEmpty
• Reading fields of data from a text file
• Storing an object on disk using storeOn reading
  the object back in

21
Creating Classes

• How to build a class
• Instance Variables
• Class methods versus instance methods

22
Creating Methods

• Steps in creating a method
• Methods are attached to classes
• Message patterns
• unary messages
• keyword messages
• Use of the New Method Template
• Be able to create a method !!!
• Be able to use a method that you create !!!

23
PARTS

• What is a PART?
• Visual and Non-Visual Parts
• The three editors
• what each is used for

24
Assembling Your Application in the Composition
Editor

• Steps in assembling your application
• Types of links
• Adding Non-Visual Parts
• Using the Parts Palette
• How to add links
• Tear-off Attributes and Quick Form
• Testing your application
• Debugging your application