Question

From a Hash relations I want to remove some entries and keep the ones I removed in another Hash obj.

I found Hash.delete_if and did:

obj = relations.delete_if{|k,v| v[:value] == 1}

However, instead of returning the ones that are removed, it returns the ones that are not removed.

Is there a method that does that?

Answer 1

Try this:

another_hash = {}
relations.delete_if{|k,v| v == 1 ? another_hash[k] = v; true : false}