How to add to an existing hash in Ruby

Question

In regards to adding an key => value pair to an existing populated hash in Ruby, I\'m in the process of working through Apress\' Beginning Ruby and have just fi

Answer 1

hash {}
hash[:a] = 'a'
hash[:b] = 'b'
hash = {:a => 'a' , :b = > b}

You might get your key and value from user input, so you can use Ruby .to_sym can convert a string to a symbol, and .to_i will convert a string to an integer.
For example:

movies ={}
movie = gets.chomp
rating = gets.chomp
movies[movie.to_sym] = rating.to_int
# movie will convert to a symbol as a key in our hash, and 
# rating will be an integer as a value.