Rails 7 adds Enumerable#maximum and Enumerable#minimum to easily calculate the maximum or minimum from extracted elements of an enumerable.

Let’s say we have a model called Product with an attribute price.

Now we need to get the maximum or minimum value of price for an array of products.

### Before

We would get the minimum and maximum value using:

In the case of an ActiveRecord Collection, we could achieve this just by using maximum and minimum directly on the collection as these methods are defined in the ActiveRecord::Calculations library.

### After

Rails 7 added maximum and minimum methods in the Enumerable module. Hence they can be used directly on all enumerable.

So from the above example,

This is a simple enhancement, but it helps a lot when we have to deal with enumerable directly and not ActiveRecord Collection objects.