RAA - iterator

A bunch of external iterators with an interface similar to the GoF design pattern. Its carefully unittested.

It supports the following iterators:

Collection, iterates over an Array or similar containers.
Reverse, decorator which reverses the iterator.
Range, iterate in the range between two iterators.
Concat, concat multiple iterators into one.
Continuation, turn #each_word/#each_byte into an iterator.
ProxyLast, remembers the last visited value.

Plus some StandardTemplateLibrary inspired methods that operate
on iterators.

#copy
#copy_n
#copy_backward
#fill
#fill_n
#transform
#transform2


License
=======

Ruby's license.



Example
=======

We can virtually concatene two arrays, so that they appear
as they were a single array.

def test_concat_sort
i1 = [5, 3, 1].create_iterator
i2 = [2, 4, 6].create_iterator
iterator = Iterator::Concat.new(i1, i2)
assert_equal((1..6).to_a, iterator.sort)
end