I Have Written Ruby for Years and Just Discovered Enumerator#feed
June 15, 2026
Ruby is full of delightful surprises.
Even after years of writing Ruby professionally, I still occasionally stumble upon a feature that makes me stop and think:
“Wait… Ruby can do that?”
Recently, that feature was Enumerator#feed.
Most Ruby developers are familiar with Enumerators. We use them every day through methods like map, select, and each. Some of us have even created custom Enumerators using Enumerator.new.
But very few developers seem to know about feed.
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