Reference:
Hello world from diff languages:
Interpreter: better error reports: have source code at runtime.
FIRST(each_rightHS); Follow(LHS); PREDICT(production of each rules)
C#/Python/Ruby: iterator permutations.
def it(n)
for i in 1 .. n
yield i
Stack push and pop.
Hash table.
If you could revise
the fundmental principles of
computer system design
to improve security...
... what would you change?