Feature #20476: Add Enumerator#eager that returns self, like Enumerator::Lazy#lazy

• Status: Open
• Assignee: -
• Target version: -

[shan (Shannon Skipper)]

I'd like to propose adding an Enumerator#eager method. We currently have Enumerator#lazy, Enumerator::Lazy#lazy, Enumerator::Lazy#eager, but not Enumerator#eager.

I like that you can always call enum.lazy with any type of Enumerator since a lazy Enumerator will just return itself. This PR just adds an equivalent enum.eager for eager Enumerators. I've found it handy to be able to call .lazy to ensure that I have a lazy Enumerator and would like to be able to do the same with .eager, which currently is only implemented on Enumerator::Lazy.

[shan (Shannon Skipper)]

Added a PR https://github.com/ruby/ruby/pull/10739