# I documented this just for you, /prog/. What now, >>1?
class Cycle
def cycle(*args) # All args are passed as an array object
# Assign a new hashtable to the @cycles instance variable if it
# doesn't already exist. If you try to access @cycles[x] for any
# key x that is not already in @cycles, a default value of -1 will
# automatically be inserted. By the way, there's absolutely no
# reason to use an underscore at the beginning of an ivar name.
# The @ already marks it as an ivar.
@cycles ||= Hash.new(-1)
h = args.hash # Hashcode, not array-as-hashtable
@cycles[h] += 1 # Tragically, there's no ++ in ruby
# Have you studied your modular arithmetic today? By the way,
# this is an implicit return statement
args[@cycles[h] % args.size]
end
end
# Now to demonstrate what it actually does
foo = Cycle.new
foo.cycle :hax, :my, :anus # => :hax
foo.cycle :hax, :my, :anus # => :my
foo.cycle :achieve, :satori # => :achieve
foo.cycle :hax, :my, :anus # => :anus
foo.cycle :hax, :my, :anus # => :hax