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Loops & Iterators

The .each Iterator

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The loop iterator is the simplest, but also one of the least powerful. A more useful iterator is the .each method, which can apply an expression to each element of an object, one at a time. The syntax looks like this:

object.each { |item| # Do something }

You can also use the do keyword instead of {}:

object.each do |item| # Do something end

The variable name between | | can be anything you like: it's just a placeholder for each element of the object you're using .each on.

Instructions

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