Enumerable's Ugly Cousin
summary
Claim: Ruby's Enumerator implements the generator pattern and makes lazy, infinite sequences practical. Evidence: converts ordinary methods into lazy enumerables with next and lazy pipelines, chains to stream and short‑circuit, and models recurring dates. Tools used: Enumerator, lazy, external iteration, and a Montrose gem that models infinite recurrences. Surprise: a small recurring‑events feature estimates four days but becomes over a month. Result: a working recurrence abstraction built on enumerator.
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chapters (6)
- 0:00Start
- 0:38What we say about Enumerator
- 2:30How to model infinite, enumerable, recurring events?
- 4:36koa next generation web framework for node.js
- 7:46lazy augments how data is processed in an enumerator chain
- 10:03Sometimes, ugly code can teach us something
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