Hashes (Dictionary / Map)

student = { “name” => “Ali”, “age” => 22, “grade” => “A” }
puts student[“name”] # Ali
student[“age”] = 23 # update
puts student.inspect
Hashes store key-value pairs.

Keys can be strings “name” or symbols :name.
Output:

Ali
{“name”=>”Ali”, “age”=>23, “grade”=>”A”}