some looping stuff.rb

# Suppose I want to the user to enter names one at a time, until the user enters a blank line, 
# then tell each name that they're awesome.

# Yeah, I don't have really a better way of doing that, and that bothers me. I'd do:

a = []
until (str = gets.chomp?).empty?
  a << str
end

# The key thing that keeps you from using a standard HOM is that you don't know the
# number of elements you're going to have off the bat.

# Generators are a pattern for dealing with this: http://en.wikipedia.org/wiki/Generator_(computer_science)