Re^5: An iterator for (not "iterating") a recursive data structure.

[Eily]

... OK, I'll have to seriously train myself to use that idiom.

[LanX]

To be fair, the semi predicate problem will still show up if you want an empty array to be a valid return value.

But there are ways to fix it:

• return an array ref hence a scalar
• throw an exception via die and catch it with eval block (or better Try::Tiny )
• do a goto to an external label named FINISHED or similar (totally undervalued option)

[ikegami]

Are you you talking about iterators that return a possibly empty list of items? Just have it return an array reference!

[LanX]

Lol ...

See first bullet point.