Question

Say I have a hash like:

h = { '0' => 'foo', 'bar' => 'baz' => '2' => 'yada'  }

How would I go about determining if this hash has any numeric keys in it and pulling out the values of those keys?

Answer 1

try this:

h.select {|key| [*0..9].map(&:to_s).include? key }

remember that I didn’t pulled out the value for you, it just returns a selection of your hash with the desired criteria. Pulling the values out this hash like you’re used to.