Creates a send/receive channel where the "send" operations block if the receiver is slow, and the "receive" side is modeled as an Iterant.

Used to bridge the gap between blocking-push-style code and async-pull-style code. You probably want to use fromBlockingCallback or fromForeach rather than this method.

Creates an Iterant[Task, T] from a producer that is defined solely in terms of a callback function. Under the hood, the producer will be run using a callback that pushes values into a blocking queue. On the "pull" end of the queue, an Iterant returned by this method will lazily receive values while there is demand. The producer function will be run by the blockingExecutor (and it will almost certainly block!). You should make sure to avoid using a blockingExecutor that will block the same thread as the consumer, which expects to be run asynchronously.

It is safe to reuse the consumer; each time you use it, it will re-run the producer on the given executor.

CAREFUL! Traversable implements Iterable by running its foreach method into a builder, building a strict collection, and returning an iterator over that collection. This might cause an OutOfMemoryError if the collection is large.

If you have a producer that properly implements Iterable, you should use Iterant's own helper methods rather than this one, since those can avoid blocking.