You can’t override a designated initializer with one that is failable. The
second one is defining a new initializer that is failable, instead of
overriding the one from its superclass.
Saagar Jha
> On Jan 27, 2017, at 8:45 AM, tuuranton--- via swift-users
> <swift-users@swift.org> wrote:
>
> See the comments. Why is one allowed but the other one isn't and what's the
> rationale for this?
>
>
> class Vehicle {
> let name: String
> init(name: String) {
> self.name = name
> }
> }
>
>
> class Car: Vehicle {
> //Why is this not allowed?
> override init?(name: String) {
> super.init(name: name)
> }
>
> //But this is allowed?
> init?(name: String, ignore: String) {
> super.init(name: name)
> }
> }
>
>
>
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