Ruby hash list keys
h = Hash.new
puts h
h["fname"] = "Foo"
h["lname"] = "Bar"
puts h
h.keys.each do|key|
puts "#{key} - #{h[key]}"
end
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h = Hash.new
puts h
h["fname"] = "Foo"
h["lname"] = "Bar"
puts h
h.keys.each do|key|
puts "#{key} - #{h[key]}"
end