Question

I would appreciate it if someone could help me understand the difference between using a Yielder in an Enumerator vs. just invoking yield in an Enumerator.

The “Well-grounded Rubyist” suggests that one doesn’t “yield from the block” but doesn’t explain precisely what’s going on.

Thanks

Answer 1

The Enumerator::Yielder#yield method and the Enumerator::Yielder::<< method are exactly the same. In fact, they are aliases.

So, which one of those two you use, is 100% personal preference, just like Enumerable#collect and Enumerable#map or Enumerable#inject and Enumerable#reduce.