Level++

States level 2

state_counts = [
	OpenStruct.new(name: "BC", country: "Canada", count: 5),
	OpenStruct.new(name: "Ontario", country: "CA", count: 15),
	OpenStruct.new(name: "QC", country: nil, count: 25),
	OpenStruct.new(name: "Oregon", country: "USA", count: 35),
	OpenStruct.new(name: "WA", country: "United States", count: 45),
	OpenStruct.new(name: "CA", country: nil, count: 55),
	OpenStruct.new(name: "WA", country: "Australia", count: 65)
]

canada    = OpenStruct.new(name: "Canada", iso: "CA", iso3: "CAN")
usa       = OpenStruct.new(name: "United States", iso: "US", iso3: "USA")
australia = OpenStruct.new(name: "Australia", iso: "AU", iso3: "AUS")

# => {bc => 5, on => 15, qc => 25, or => 35, wa => 45, ca => 55, wtf=> 65}

This currently doesn't change anything to the solution as it is not based on the country...

Let's add :

australia = OpenStruct.new(name: "Australia", iso: "AU", iso3: "AUS")

to the countries

and

OpenStruct.new(name: "WA", country: "Australia", count: 65),

to the state counts

so the output would have to be something like :

# => {ca.bc => 5, ca.on => 15, ca.qc => 25, us.or => 35, us.wa => 45, us.ca => 55, au.wa => 65}

never mind previous comment, I was using string as key, instead of objects...

Yeah it was more to ensure that "WA" wasn't being used as a state matcher for Washington.