ukiyoevega

func invert(matrix : [Double]) -> [Double] {
    var inMatrix = matrix
    var N = __CLPK_integer(sqrt(Double(matrix.count)))
    var pivots = Array(repeating: 0 as __CLPK_integer, count: Int(N))
    var workspace = Array(repeating: 0.0 as Double, count: Int(N))
    var error : __CLPK_integer = 0
    dgetrf_(&N, &N, &inMatrix, &N, &pivots, &error)
    dgetri_(&N, &inMatrix, &N, &pivots, &workspace, &N, &error)
    return inMatrix
}

ukiyoevega

func printAllSubviews(of view: UIView, from layer: Int) {
    for _ in 0..<layer {
        print(" ", separator: "", terminator: "")
    }
    print("\(view): ")
    let subView = view.subviews
    if subView.count != 0 {
        subView.forEach({ (view) in
            printAllSubviews(of: view, from: layer + 1)
        })