👀 Views: 99 💬 Answers: 1 📅 Created: 2025-06-09

ruby enumerator each_with_object Ruby

I'm attempting to set up I'm working through a tutorial and I am working with an scenario with the `each_with_object` method when trying to aggregate data from an array of hashes..... My goal is to transform an array of user data into a hash that counts occurrences of user roles. However, I'm getting a `NoMethodError` when attempting to call the block on the enumerator. Here’s the relevant code snippet: ```ruby users = [ { id: 1, role: 'admin' }, { id: 2, role: 'user' }, { id: 3, role: 'admin' }, { id: 4, role: 'user' } ] role_count = users.each_with_object(Hash.new(0)) do |user, count| count[user[:role]] += 1 end ``` When I run this, I receive the behavior: `undefined method 'each_with_object' for #<Array:0x00007fd5e40e3af0>`. I've double-checked the Ruby version, and I'm definitely using Ruby 3.0.2, where `each_with_object` should be supported. I also tried using `map` instead, but that doesn’t provide the aggregation I need. Can someone guide to understand why I'm working with this `NoMethodError` and how I can resolve it? Additionally, I tried breaking down the operation into a loop and manually adding to the hash, which worked fine, but I would like to leverage `each_with_object` for cleaner code. Any insights would be appreciated! Any help would be greatly appreciated! This issue appeared after updating to Ruby latest. Thanks for any help you can provide!