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iterate EvictingQueue backwards

See original GitHub issue

EvictingQueue is mostly a wrapper over ArrayDeque which have a descendingIterator. EvictingQueue’s only constructor is private, so I can’t extend the class. And delegate() is also protected.

Either the constructor should be made protected or delegate public, I think, so I could do what I want

Issue Analytics

State:
Created 5 years ago
Comments:5 (2 by maintainers)

Top GitHub Comments

1reaction

kluevercommented, May 20, 2019

I think we’d want to hear some use cases first for why you’d want to iterate an EvictingQueue backwards before we make any changes.

0reactions

dacunni1commented, Dec 31, 2021

✋ use case here! I wanted to use an EvictingQueue to keep around the most recent N items. When I need to process (not remove) items from the queue, I’m only interested in the most recent items which may or may not be all N items. e.g. I may keep around 20 things but might only be interested in the most recent 10 right now. There’s no easy way to do this with EvictingQueue, so I’m forced to use another Deque implementation and manually evict things when necessary.

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