Nslayoutanchor podtrieda

nslayoutanchor podtrieda

extension NSLayoutDimension {
  @discardableResult
  func constrain(_ relation: NSLayoutConstraint.Relation = .equal,
                 to anchor: NSLayoutDimension,
                 with constant: CGFloat = 0.0,
                 multiplyBy multiplier: CGFloat = 1.0,
                 isActive: Bool = true) -> NSLayoutConstraint {
    let constraint: NSLayoutConstraint
    switch relation {
      case .equal:
        constraint = self.constraint(equalTo: anchor, multiplier: multiplier, constant: constant)
      case .greaterThanOrEqual:
        constraint = self.constraint(greaterThanOrEqualTo: anchor, multiplier: multiplier, constant: constant)
      case .lessThanOrEqual:
        constraint = self.constraint(lessThanOrEqualTo: anchor, multiplier: multiplier, constant: constant)
        }
    constraint.isActive = isActive
    return constraint
  }
  @discardableResult
  func constrain(_ relation: NSLayoutConstraint.Relation = .equal,
                 to constant: CGFloat = 0.0,
                 isActive: Bool = true) -> NSLayoutConstraint {
    let constraint: NSLayoutConstraint
    switch relation {
      case .equal:
        constraint = self.constraint(equalToConstant: constant)
      case .greaterThanOrEqual:
        constraint = self.constraint(greaterThanOrEqualToConstant: constant)
      case .lessThanOrEqual:
        constraint = self.constraint(lessThanOrEqualToConstant: constant)
    }
    constraint.isActive = isActive
    return constraint
  }
}