[RUBY] How to add a new hash / array


I've been using the Rails framework these days, so I'll recap the early learning content that I just forgot.

Add new values and keys to the hash

hash = {}

hash[:name] = "I did it" #New keys not in the hash
hash[:name] = "Kanemura" #The value of the existing key is updated

puts hash[:name] #When outputting, the key name is a symbol in square brackets
hash = {name: "Kanemura"} #The final hash looks like this


arrays = []
hash = {name: "Kanemura"}

arrays << hash #Add to the array in hash form
puts arrays[0][:name]
puts arrays


When I was using Rails, I wondered if I was using hashes inside, but I completely forgot how to handle it in Ruby.

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