Non-failable initializer requirement cannot be satisfied by failable initializer
I have this struct and I want its init to be failable because something could go wrong with the JSON dictionary I pass:
struct AdminModel:Interface{
var status:Any = ""
var l:String = ""
var p:String = ""
var url:String = ""
init?(json:NSDictionary){
if let status = json["status"] as? Any,
let l = json["l"] as? String,
let p = json["p"] as? String,
let url = json["url"] as? String
{
self.status = status
self.l = l
self.p = p
self.url = url
}else{
return nil
}
}
}
There's no issue until I add ? after init to make init failable: at that point XCode complains:
Non-failable initializer requirement 'init(json:)' cannot be satisfied by failable initializer ('init?')
Why my struct can't be failable? Should I declare failable even the protocol init?
swift struct failable
add a comment |
I have this struct and I want its init to be failable because something could go wrong with the JSON dictionary I pass:
struct AdminModel:Interface{
var status:Any = ""
var l:String = ""
var p:String = ""
var url:String = ""
init?(json:NSDictionary){
if let status = json["status"] as? Any,
let l = json["l"] as? String,
let p = json["p"] as? String,
let url = json["url"] as? String
{
self.status = status
self.l = l
self.p = p
self.url = url
}else{
return nil
}
}
}
There's no issue until I add ? after init to make init failable: at that point XCode complains:
Non-failable initializer requirement 'init(json:)' cannot be satisfied by failable initializer ('init?')
Why my struct can't be failable? Should I declare failable even the protocol init?
swift struct failable
2
What isInterface? Perhaps it requires a non-failable init?– Without that, your code compiles.
– Martin R
Jul 28 '17 at 12:38
Interface is a protocol with a non-failable init, I suppose the error lies there, even if I read it elsewhere :-)
– user1094081
Jul 28 '17 at 12:40
1
That is the problem. The error message is quite clear, and your last sentence is the solution. – I am not sure what you are expecting.
– Martin R
Jul 28 '17 at 12:43
I could delete the question but someone as silly/tired as me could benefit from your comment
– user1094081
Jul 28 '17 at 13:00
add a comment |
I have this struct and I want its init to be failable because something could go wrong with the JSON dictionary I pass:
struct AdminModel:Interface{
var status:Any = ""
var l:String = ""
var p:String = ""
var url:String = ""
init?(json:NSDictionary){
if let status = json["status"] as? Any,
let l = json["l"] as? String,
let p = json["p"] as? String,
let url = json["url"] as? String
{
self.status = status
self.l = l
self.p = p
self.url = url
}else{
return nil
}
}
}
There's no issue until I add ? after init to make init failable: at that point XCode complains:
Non-failable initializer requirement 'init(json:)' cannot be satisfied by failable initializer ('init?')
Why my struct can't be failable? Should I declare failable even the protocol init?
swift struct failable
I have this struct and I want its init to be failable because something could go wrong with the JSON dictionary I pass:
struct AdminModel:Interface{
var status:Any = ""
var l:String = ""
var p:String = ""
var url:String = ""
init?(json:NSDictionary){
if let status = json["status"] as? Any,
let l = json["l"] as? String,
let p = json["p"] as? String,
let url = json["url"] as? String
{
self.status = status
self.l = l
self.p = p
self.url = url
}else{
return nil
}
}
}
There's no issue until I add ? after init to make init failable: at that point XCode complains:
Non-failable initializer requirement 'init(json:)' cannot be satisfied by failable initializer ('init?')
Why my struct can't be failable? Should I declare failable even the protocol init?
swift struct failable
swift struct failable
asked Jul 28 '17 at 12:34
user1094081
2
What isInterface? Perhaps it requires a non-failable init?– Without that, your code compiles.
– Martin R
Jul 28 '17 at 12:38
Interface is a protocol with a non-failable init, I suppose the error lies there, even if I read it elsewhere :-)
– user1094081
Jul 28 '17 at 12:40
1
That is the problem. The error message is quite clear, and your last sentence is the solution. – I am not sure what you are expecting.
– Martin R
Jul 28 '17 at 12:43
I could delete the question but someone as silly/tired as me could benefit from your comment
– user1094081
Jul 28 '17 at 13:00
add a comment |
2
What isInterface? Perhaps it requires a non-failable init?– Without that, your code compiles.
– Martin R
Jul 28 '17 at 12:38
Interface is a protocol with a non-failable init, I suppose the error lies there, even if I read it elsewhere :-)
– user1094081
Jul 28 '17 at 12:40
1
That is the problem. The error message is quite clear, and your last sentence is the solution. – I am not sure what you are expecting.
– Martin R
Jul 28 '17 at 12:43
I could delete the question but someone as silly/tired as me could benefit from your comment
– user1094081
Jul 28 '17 at 13:00
2
2
What is
Interface ? Perhaps it requires a non-failable init?– Without that, your code compiles.– Martin R
Jul 28 '17 at 12:38
What is
Interface ? Perhaps it requires a non-failable init?– Without that, your code compiles.– Martin R
Jul 28 '17 at 12:38
Interface is a protocol with a non-failable init, I suppose the error lies there, even if I read it elsewhere :-)
– user1094081
Jul 28 '17 at 12:40
Interface is a protocol with a non-failable init, I suppose the error lies there, even if I read it elsewhere :-)
– user1094081
Jul 28 '17 at 12:40
1
1
That is the problem. The error message is quite clear, and your last sentence is the solution. – I am not sure what you are expecting.
– Martin R
Jul 28 '17 at 12:43
That is the problem. The error message is quite clear, and your last sentence is the solution. – I am not sure what you are expecting.
– Martin R
Jul 28 '17 at 12:43
I could delete the question but someone as silly/tired as me could benefit from your comment
– user1094081
Jul 28 '17 at 13:00
I could delete the question but someone as silly/tired as me could benefit from your comment
– user1094081
Jul 28 '17 at 13:00
add a comment |
1 Answer
1
active
oldest
votes
Maybe your Interface is like:
protocol Interface {
init(json: JSON)
}
but your AdminModel's init is init?(json: JSON), so you should keep consistent:
protocol Interface {
init?(json: JSON)
}
answered Nov 22 '18 at 7:52
yuanjileeyuanjilee
637
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Maybe your Interface is like:
protocol Interface {
init(json: JSON)
}
but your AdminModel's init is init?(json: JSON), so you should keep consistent:
protocol Interface {
init?(json: JSON)
}
answered Nov 22 '18 at 7:52
yuanjileeyuanjilee
637
add a comment |
Maybe your Interface is like:
protocol Interface {
init(json: JSON)
}
but your AdminModel's init is init?(json: JSON), so you should keep consistent:
protocol Interface {
init?(json: JSON)
}
answered Nov 22 '18 at 7:52
yuanjileeyuanjilee
637
add a comment |
Maybe your Interface is like:
protocol Interface {
init(json: JSON)
}
but your AdminModel's init is init?(json: JSON), so you should keep consistent:
protocol Interface {
init?(json: JSON)
}
answered Nov 22 '18 at 7:52
yuanjileeyuanjilee
637
Maybe your Interface is like:
protocol Interface {
init(json: JSON)
}
but your AdminModel's init is init?(json: JSON), so you should keep consistent:
protocol Interface {
init?(json: JSON)
}
answered Nov 22 '18 at 7:52
yuanjileeyuanjilee
637
answered Nov 22 '18 at 7:52
yuanjileeyuanjilee
637
answered Nov 22 '18 at 7:52
yuanjileeyuanjilee
637
answered Nov 22 '18 at 7:52
yuanjileeyuanjilee
637
637
add a comment |
add a comment |
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2
What is
Interface? Perhaps it requires a non-failable init?– Without that, your code compiles.– Martin R
Jul 28 '17 at 12:38
Interface is a protocol with a non-failable init, I suppose the error lies there, even if I read it elsewhere :-)
– user1094081
Jul 28 '17 at 12:40
1
That is the problem. The error message is quite clear, and your last sentence is the solution. – I am not sure what you are expecting.
– Martin R
Jul 28 '17 at 12:43
I could delete the question but someone as silly/tired as me could benefit from your comment
– user1094081
Jul 28 '17 at 13:00