Missing method implementation for `Enum.each_value`

[edgarjs]

Describe the bug

This is not a bug but a "nice to have". Given an enum type like MyEnum = Types::String.enum('foo', 'bar'), when I want to iterate over the values, I'm doing it with MyEnum.values.each, but it would be nice if the Enum type had the each_value method similar to a Hash object.

To Reproduce

Run the following lines in an IRB session with the dry-types gem installed:

require 'dry-types'

MyEnum = Types::String.enum('foo', 'bar')
MyEnum.each_value { |value| puts value } # Throws a NoMethodError

Expected behavior

It would be nice if Dry::Types::Enum mimics the interface of a Hash object and implements the each_value method.

My environment

• Affects my production application: YES
• Ruby version: ruby 3.1.0p0 (2021-12-25 revision fb4df44d16) [arm64-darwin21]
• OS: macOS 13.4.1

[CharlieWWW94]

@edgarjs I have made a PR that implements this method here #471 :+1: