Question

I tried looking through this Ruby documentation, but have no idea why I would want to store a function as a content of the hash.

Thanks in advance for your explanations!

def find_city(map, state)
  if map.include? state
    return map[state]
  else
    return "Not found."
  end
end

cities[:find] = method(:find_city)

Answer 1

When you wanted to look up a proc by a key.

This might be used, for example, as a simple command pattern implementation.

As to your example, without knowing what cities is, or having any more context, it’s impossible to say what the purpose is.