Documentation for method push-until-lazy assembled from the following pages:
Role: Iterator §
From Iterator
(Iterator) method push-until-lazy §
Defined as:
method push-until-lazy(Iterator: --> Mu)Should produce values until it considers itself to be lazy, and push them onto $target.
The Iterator role implements this method as a no-op if is-lazy returns a True value, or as a synonym of push-all if not.
This matters mostly for iterators that have other iterators embedded, some of which might be lazy, while others aren't.