Ruby Quicktips

The Beauty of Collect

Being from c programming background, to get an array of some property from the objects, I used to write this in Ruby:

amount_array = []

for order in account.orders
  amount_array << order.amount.some_operation
end

While a much cleaner way is to use Array#collect:

amount_array = account.orders.collect { |order| order.amount.some_operation }

This tip was submitted by zerothabhishek.