How to sort an array of hashes in ruby

Question

I have an array, each of whose elements is a hash with three key/value pairs:

:phone => \"2130001111\", :zip => \"12345\", :city => \"sometown\"
         


        

Answer 1

Use the bang to modify in place the array:

array_of_hashes.sort_by!(&:zip)

Or re-assign it:

array_of_hashes = array_of_hashes.sort_by(&:zip)

Note that sort_by method will sort by ascending order.

If you need to sort with descending order you could do something like this:

array_of_hashes.sort_by!(&:zip).reverse!

or

array_of_hashes = array_of_hashes.sort_by(&:zip).reverse