New posts in hash-of-hashes

How to assign hash['a']['b']= 'c' if hash['a'] doesn't exist?

ruby hash variable-assignment autovivification hash-of-hashes

Accessing elements of nested hashes in ruby [duplicate]

ruby hash hash-of-hashes

How to avoid NoMethodError for missing elements in nested hashes, without repeated nil checks?

ruby-on-rails ruby hash hash-of-hashes