Ruby Hash
Ruby hashes are equivalent to Java Hashmaps and allows us to store information as key-value pair in contrast to arrays in which we can have only integer keys or indices. Thus, Ruby hashes are generalization of arrays.
Ruby Hash Example
#!/usr/bin/ruby # File: rubyhash.rb address = { "First name" => "Anthony", "Last name" => "Moody", "Street" => "101 LA Street", "City" => "CA", "Country" => "US" } puts address['City']
Output of the above code would be CA.
Ruby Hashes Iteration through Foreach
#!/usr/bin/ruby # File: rubyhashforeach.rb address.each do |key, value| puts key + " - " + value end
This would output:
"First name" - "Anthony", "Last name" - "Moody", "Street" - "101 LA Street", "City" - "CA", "Country" - "US"
Having learnt Ruby arrays and hash, now learn how to convert Ruby arrays to hashes.
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