Hi All,
I would like to merge [functor]'s branch generators-FUNCTOR-14 [1], related to
issue FUNCTOR-14 [2].
This the summary of the changes in that branch:
- New subpackage, o.a.c.functor.generator.loop
- New generator type added, LoopGenerator, that can be stopped
- The BaseGenerator has no long isStopped() or stop() methods. Both have been
moved to the LoopGenerator.
- Ranges are no long generators
- New package o.a.c.functor.range
- Range extends Iterable and Iterator interfaces
The motivation for these changes were to be able to create generators that
didn't have the stoppable behaviour (thus the new package and type), and to be
able to have simple ranges in for loops.
Before the new range package, in order to iterate over the created range, you
would have to write a Procedure that would be used as a callback for each range
element. Now, by extending Iterable/Iterator you can do as follows:
+--snippet--+
Range<Integer, Integer> n = new IntegerRange(0, 10);
for (int i : n) {
System.out.printf("%d ", i);
}
+--snippet--+
That produces 0 1 2 3 4 5 6 7 8 9 , or even a range like:
+--snippet--+
for (int i : Ranges.integerRange(0, BoundType.OPEN, 10, BoundType.OPEN, 2)) {
// 2 is the step
System.out.printf("%d ", i);
}
+--snippet--+
That produces 2 4 6 8 .
Any thoughts/objections on this?
Thank you in advance!
[1]
http://svn.apache.org/repos/asf/commons/proper/functor/branches/generators-FUNCTOR-14/
[2] https://issues.apache.org/jira/browse/FUNCTOR-14
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