Com S 342 meeting -*- Outline -*-

* orientation
	Context: now we have the tools in hand, time to apply them.

------------------------------------------
                WHERE ARE WE?

Chapters

  	basic concepts and Scheme
        syntax abstraction
  1	induction and recursion
  2     data abstraction

  3     environment-passing interpreters
  3.1	simple interpreter
  3.2   the front end
  3.3	conditionals
  3.4   local binding
  3.5   procedures
  3.6   recursion
  3.9   statements

  3.8	parameter passing
  4     types
  5     objects and classes
  6	objects and types
------------------------------------------

	We've already seen several programs that are *syntax directed*
		 e.g., free-vars, bound-vars, lexical-address, 
                        strength-reduce

	Now we'll do the obvious other program: an interpreter

------------------------------------------
		WHY?

Use interpreters to:

	- explain semantics of features

	- play with behavior of features

	- play with changes to features


		HOW

Plan:
	- start with simple interpreter

	- add features
------------------------------------------

        applications of this idea:
                programming languages
                scripting languages for programs (e.g., for a spreadsheet,
                                                editor, games, etc.)