fn deduplicated<T>(anon array: [T]) throws -> [T] {
    mut existing_items: {T} = {}
    mut result: [T] = []
    for value in array {
        if not existing_items.contains(value) {
            existing_items.add(value)
            result.push(value)
        }
    }
    return result
}

fn deduplicated_set<T>(anon array: [T]) throws -> {T} {
    mut result: {T} = {}
    for value in array {
        result.add(value)
    }
    return result
}


fn main() {
    let array = [1, 2, 3, 3, 2, 5, 4]
    println("{}", deduplicated(array))
    println("{}", deduplicated_set(array))
}