How do I fetch multiple hash values at once?

Question

What is a shorter version of this?:

from = hash.fetch(:from) to = hash.fetch(:to) name = hash.fetch(:name) # etc 

Note the fetch, I want to raise an error if the key doesn't exist.

There must be shorter version of it, like:

from, to, name = hash.fetch(:from, :to, :name) # <-- imaginary won't work 

It is OK to use ActiveSupport if required.

Answer 1

Use Hash's values_at method:

from, to, name = hash.values_at(:from, :to, :name) 

This will return nil for any keys that don't exist in the hash.