Reduce Hash Values

Question

I am having trouble with the syntax for reduce. I have a hash of the following format:

H = {\"Key1\" => 1, \"Key2\" => 2}

I would like t

Answer 1

I know I'm excavating this one, but if you happen to use Rails, the .sum method can help:

H = {"Key1" => 1, "Key2" => 2}
=> {"Key1"=>1, "Key2"=>2}
> H.values.sum
=> 3

Advantage is that it returns 0 on empty hashes:

> {}.values.sum
=> 0
> {}.values.reduce(:+)
=> nil

I noticed it was Rails-specific only after typing this answer. I know the OP didn't add the Rails tag, but I figured it might be useful for people stopping by.

Note that as of Ruby 2.4.0, .sum is now available.