zip

zip

zip combines two or more arrays element-by-element into an array of small arrays, pairing up corresponding elements by position, similar to a zipper. If the arrays have different lengths, missing elements from the shorter ones become nil. It's frequently used to iterate over two related arrays together.

Note: array1.zip(array2).each { |a, b| ... } is a common idiom for iterating two arrays together in lockstep.

Example: zip

names = ["Alice", "Bob", "Cara"]
ages = [30, 25, 40]

paired = names.zip(ages)
puts paired.inspect

paired.each { |name, age| puts "#{name} is #{age}" }