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Optional @escaping Closure?
2019 Community Moderator ElectionSwift 3 optional escaping closure parameterSwift optional escaping closureHow do JavaScript closures work?What is the difference between a 'closure' and a 'lambda'?JavaScript closure inside loops – simple practical exampleHow to use Swift @autoclosure@noescape attribute in Swift 1.2Swift 3 optional escaping closure parameterHow to call non-escaping closure inside a local closure?I am little bit confused about escaping closureSwift @escaping and Completion HandlerMarking a variadic closure parameter as escaping
I want to use Optional @escaping closures to execute something when the closure is called in the function, but if i make it optional like that:
func checkForFavorites(_ completion: (@escaping (Bool) -> Void)?)
i get this error
@escaping attribute may only be used in function parameter position
This may be an easy question so please have understanding
swift closures swift4.2
edited Mar 6 at 19:55
Sulthan
98.5k16160203
asked Mar 6 at 19:53
SwiftNewlingSwiftNewling
30315
add a comment |
I want to use Optional @escaping closures to execute something when the closure is called in the function, but if i make it optional like that:
func checkForFavorites(_ completion: (@escaping (Bool) -> Void)?)
i get this error
@escaping attribute may only be used in function parameter position
This may be an easy question so please have understanding
swift closures swift4.2
edited Mar 6 at 19:55
Sulthan
98.5k16160203
asked Mar 6 at 19:53
SwiftNewlingSwiftNewling
30315
3
Optional closures are always escaping. Related stackoverflow.com/questions/47417920/…
– Sulthan
Mar 6 at 19:55
(@escaping (Bool) -> Void)?)=>@escaping ((Bool) -> Void)?)?
– Larme
Mar 6 at 20:01
Larme: @escaping attribute only applies to function types
– SwiftNewling
Mar 6 at 20:06
2
Possible duplicate of Swift 3 optional escaping closure parameter
– Robert Dresler
Mar 6 at 20:33
add a comment |
I want to use Optional @escaping closures to execute something when the closure is called in the function, but if i make it optional like that:
func checkForFavorites(_ completion: (@escaping (Bool) -> Void)?)
i get this error
@escaping attribute may only be used in function parameter position
This may be an easy question so please have understanding
swift closures swift4.2
edited Mar 6 at 19:55
Sulthan
98.5k16160203
asked Mar 6 at 19:53
SwiftNewlingSwiftNewling
30315
I want to use Optional @escaping closures to execute something when the closure is called in the function, but if i make it optional like that:
func checkForFavorites(_ completion: (@escaping (Bool) -> Void)?)
i get this error
@escaping attribute may only be used in function parameter position
This may be an easy question so please have understanding
swift closures swift4.2
swift closures swift4.2
edited Mar 6 at 19:55
Sulthan
98.5k16160203
asked Mar 6 at 19:53
SwiftNewlingSwiftNewling
30315
edited Mar 6 at 19:55
Sulthan
98.5k16160203
asked Mar 6 at 19:53
SwiftNewlingSwiftNewling
30315
edited Mar 6 at 19:55
Sulthan
98.5k16160203
edited Mar 6 at 19:55
Sulthan
98.5k16160203
edited Mar 6 at 19:55
Sulthan
98.5k16160203
98.5k16160203
asked Mar 6 at 19:53
SwiftNewlingSwiftNewling
30315
asked Mar 6 at 19:53
SwiftNewlingSwiftNewling
30315
asked Mar 6 at 19:53
SwiftNewlingSwiftNewling
30315
30315
3
Optional closures are always escaping. Related stackoverflow.com/questions/47417920/…
– Sulthan
Mar 6 at 19:55
(@escaping (Bool) -> Void)?)=>@escaping ((Bool) -> Void)?)?
– Larme
Mar 6 at 20:01
Larme: @escaping attribute only applies to function types
– SwiftNewling
Mar 6 at 20:06
2
Possible duplicate of Swift 3 optional escaping closure parameter
– Robert Dresler
Mar 6 at 20:33
add a comment |
3
Optional closures are always escaping. Related stackoverflow.com/questions/47417920/…
– Sulthan
Mar 6 at 19:55
(@escaping (Bool) -> Void)?)=>@escaping ((Bool) -> Void)?)?
– Larme
Mar 6 at 20:01
Larme: @escaping attribute only applies to function types
– SwiftNewling
Mar 6 at 20:06
2
Possible duplicate of Swift 3 optional escaping closure parameter
– Robert Dresler
Mar 6 at 20:33
3
3
Optional closures are always escaping. Related stackoverflow.com/questions/47417920/…
– Sulthan
Mar 6 at 19:55
Optional closures are always escaping. Related stackoverflow.com/questions/47417920/…
– Sulthan
Mar 6 at 19:55
(@escaping (Bool) -> Void)?) => @escaping ((Bool) -> Void)?)?– Larme
Mar 6 at 20:01
(@escaping (Bool) -> Void)?) => @escaping ((Bool) -> Void)?)?– Larme
Mar 6 at 20:01
Larme: @escaping attribute only applies to function types
– SwiftNewling
Mar 6 at 20:06
Larme: @escaping attribute only applies to function types
– SwiftNewling
Mar 6 at 20:06
2
2
Possible duplicate of Swift 3 optional escaping closure parameter
– Robert Dresler
Mar 6 at 20:33
Possible duplicate of Swift 3 optional escaping closure parameter
– Robert Dresler
Mar 6 at 20:33
add a comment |
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3
Optional closures are always escaping. Related stackoverflow.com/questions/47417920/…
– Sulthan
Mar 6 at 19:55
(@escaping (Bool) -> Void)?)=>@escaping ((Bool) -> Void)?)?– Larme
Mar 6 at 20:01
Larme: @escaping attribute only applies to function types
– SwiftNewling
Mar 6 at 20:06
2
Possible duplicate of Swift 3 optional escaping closure parameter
– Robert Dresler
Mar 6 at 20:33