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Subprograms

Handout:

PDF File (13pp., 562K)

Outline

• Definition of Terms
  • Characteristics of Subprograms
  • Basic Definitions
  • More Definitions
  • Parameter
  • Actual/Formal Param Correspondence
• Default Parameter Values
• Two Types of Subprograms
• Design Issues for Subprograms
• Local Referencing Environments
• Local Variables in Example PLs
• Parameters and Parameter Passing
  • Pass-By-Value
  • Pass-By-Result
  • Pass-By-Value-Result
  • Pass-By-Reference
  • Pass-By-Name
    • Pass-By-Name Example 1
    • Pass-By-Name Example 2
    • Disadvantages of Pas-By-Name
  • Param Passing: Language Examples
  • Param Passing: PL Examples (cont.)
  • Type Checking Parameters
  • Implementing Parameter Passing
  • Ada Param Passing Implementations
• Multidimensional Arrays as Params
  • More Array Passing Designs
• Design Considerations for Parameter Passing
• Subprograms As Parameters: Issues
  • Subprogs as Params: Issues (cont.)
• Overloading
• Generic Subprograms
• Independent and Separate Comp.
• Language Examples: Indep./Sep. Compilation
• Functions
• Accessing Nonlocal Environments
• Methods for Accessing Nonlocals
• User-Defined Overloaded Operators
• Coroutines