Kaba class Circuit ed

class Circuit
    var edges: owned![Edge][]
    var node_grounded: i32
    var node_input: i32
    var nodes: Node[]

    # constructors
    func mut __init__()

    # functions
    func mut add_default(n: i32[], t: EdgeType) -> Edge&
    func mut clear()
    func create_G(out G: Matrix, dt: f64)
    func create_I(out I: f64[], I_in: f64, dt: f64)
    func export() -> string
    func get_xxxx() -> f64
    func mut import(s: string)
    func mut optimizer_step(I_in: f64, dt: f64)
    func quick_out()
    func mut reset_default()
    func mut reset_state()
    func mut simulate(t_max: f64, dt: f64, amp: f64, omega: f64, type: i32, out res: SimResult)
    func mut time_step(I_in: f64, dt: f64)