Using each for object with an array of objects

Question

I have an object @cars = Cars that has an array car_array of objects Car that have instance variables @id and @mileage, so, writing it as pseudo array it's:

Cars = [
    Car1 = [1, 12000],
    Car2 = [2, 33000]
]

Is there a way to write an each method to iterate over the cars, in this way:

@cars.each do |id, mileage|
    ...
end

?

I've tried to do a custom each method in Cars:

def each(&block)
    @car_array.each(&block)
end

but that would only return each Car object into the enumerator. How would I then convert each Car object to an array?

Aleksei Matiushkin · Accepted Answer · 2017-10-01 18:06:46Z

3

In ruby we do chain methods to accomplish different complicated transforms:

@cars.map do |car|
  [car.id, car.mileage]
end.each do |id, mileage|
    ...
end

answered Oct 1, 2017 at 18:06

Aleksei Matiushkin

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