Ruby array shortcuts - "&:" and "&method"

[nvtin]

Call a method on every items with &:
So this

[:foo, :bar].each do |item|
  item.to_s
end

we can reduce to
[:foo, :bar].each(&:to_s)

But, what if you want to call a method for each item in an array, and this item should be a parameter for this method?

Call a method with every items as a parameter with &method

So this:

[:foo, :bar].each do |item|
  puts(item)
end

Can be reduce to
[:foo, :bar].each(&method(:puts))

Source: https://til.hashrocket.com/posts/2dab9b4db4-ruby-array-shortcuts-and-method