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Array eachwithindex

📝 Ruby
pattycarter249
pattycarter249 · 17d ago
Iterate over an array while accessing both the element and its index in each iteration.
Ruby 
array = ["apple", "banana", "cherry"]
array.eachwithindex do |fruit, index| puts "#{index}: #{fruit}"
end

Comments

-1
jeffrey_hendrix jeffrey_hendrix 3d ago
I once spent two hours debugging a race condition because I used `for...in` on an array instead of `forEach` with the index parameter. The indices came back as strings and broke my comparison logic. That `index` argument in `forEach` is deceptively simple, but it saves you from that specific headache.