Programming Language Basics

Programming Language Basics

1. Procedures, Funcitons & Methods

   • PROCEDURE
     • NO RETURN
   • FUNCTION
     • Returns a VALUE
   • METHOD
     • Associated to a CLASS
     • Could behave like a FUNCTION or METHOD

2. Explicit Access Control

   • PUBLIC
     • Outside Class
   • PRIVATE
     • MAIN CLASS & "Friend" CLASSES
   • PROTECTED
     • SUBCLASSES

3. Aliasing

   • 2 formal parameters reffer to the same location

4. Enviroment & States

   • Names
     • Enviroment
       • Locations (variables)
         • State
           • Values
           • Mapping from LOCATIONS
       • Mapping from NAMES

5. Static

   • Compile Time
   • Static Scope
     • Block Structure
     • private, public, protected, begin, end;

6. Names, Identifiers & Variables

   • NAME
     • Expressions
   • VARIABLE
     • Storage's Location
   • IDENTIFIER
     • Object
     • Procedure
     • Class
     • Type

7. Declarations & Definitions

   • DECLARATION
     • Types of things
   • DEFINITION
     • Signature

8. Parameter Passing

   • Call-by-Reference
     • Pass ACTUAL's address
   • Call-by-Value
     • Replace FORMAL with ACTUAL
   • Calll-by-Name
     • Replace ACTUAL with FORMAL

9. Dynamic

   • Run Time
   • Dynamic Scope
     • Recent call of declarations
     • Polymorphic Procedures