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return_multiple_values.md

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Return Multiple Values

Methods can only ever return one type of thing. This usually retricts you to only ever returning one int or one String.

But if you make a class that has multiple fields you can use that to return more than one piece of information.1

class Location {
    double latitude;
    double longitude;
}

Location findTreasureIsland() {
    Location location = new Location();
    location.latitude = 51.4075;
    location.longitude = 0.4636;
    return location;
}

void main() {
    Location treasureIsland = findTreasureIsland();
    IO.println(
        "Treasure island is located at " +
            treasureIsland.latitude +
            " " +
            treasureIsland.longitude +
            "."
    );
}

Footnotes

  1. There are many more reasons to make your own classes, but this one is pretty quick to see even at this stage. ↩