Question

Say I have a custom class, what should I override to get array-like behaviour? I think that supplying an each method won’t be enough, as that won’t give me acces to the [] methods?

Should I inherit the Array class? What should I overwrite in there?

Answer 1

For enumerable like behavior (which sounds like what you want), you should include Enumerable to get the Enumerable module functionality, which means you need to provide a method each. This will give you lots of the relevant methods you want (Enumerable details).

If you want just [] like functionality, you only need the following methods, and nothing more:

def [] key
  # return value for key here.
end

def []= key, value
  # store value under key here.
end