Sep 10, 2003
-------------

- more on parsing
	- top-down
	   - predictive	 

- recall that
	- left recursion must be removed
	- must be left factored

- how to recognize "suitability" of grammar
  for predictive parsing?
	- use FIRST and FOLLOW sets to characterize
		- alternative elements
			- intersection of FIRST sets
			  must be null
		- optional elements
			- FIRST of optional cannot have
			  anything in common with FOLLOW
			  of optional

- Move on to next chapter
	- study imperative languages and concepts

- What is an imperative language?
	- abstractions based on Von Neumann architecture
		- memory, cells, variables, registers
		- instructions, statements

- "Binding Times"
	- a useful concept for studying language concepts

- Lets think of some good old times
	- Language Definition Time
		- "int means Integer"
	- Language Implementation Time
		- "size of int"
	- Translation Time
		- "c is an integer variable"
	- Link Time
		- "definition of printf is provided"
	- Load Time
		- "memory cell assigned to a variable"
	- Run Time
		- "value of a variable"