Sorting array of dictionaries with Any value












1















I have this [[String:Any]], where Every element have this:



["date":Date,"value":CGFloat]


I would like to sort by "date" key.(dates goes up or down)



 let sortedArray = array.sort { ($0["date"] as? Date) < ($1["date"] as? Date) }


Provides errors that I can't compare 2 dates.






swift







share|improve this question























  • Convert the values to structs first and stop using Any.

    – Sulthan
    Nov 25 '18 at 13:58











  • You are encouraged to use a custom struct, it makes life much easier. And with this syntax you have to use sorted {...

    – vadian
    Nov 25 '18 at 13:58








  • 3





    It is always a good idea to show the exact error messages ...

    – Martin R
    Nov 25 '18 at 14:31


















1















I have this [[String:Any]], where Every element have this:



["date":Date,"value":CGFloat]


I would like to sort by "date" key.(dates goes up or down)



 let sortedArray = array.sort { ($0["date"] as? Date) < ($1["date"] as? Date) }


Provides errors that I can't compare 2 dates.






swift







share|improve this question























  • Convert the values to structs first and stop using Any.

    – Sulthan
    Nov 25 '18 at 13:58











  • You are encouraged to use a custom struct, it makes life much easier. And with this syntax you have to use sorted {...

    – vadian
    Nov 25 '18 at 13:58








  • 3





    It is always a good idea to show the exact error messages ...

    – Martin R
    Nov 25 '18 at 14:31
















1












1








1








I have this [[String:Any]], where Every element have this:



["date":Date,"value":CGFloat]


I would like to sort by "date" key.(dates goes up or down)



 let sortedArray = array.sort { ($0["date"] as? Date) < ($1["date"] as? Date) }


Provides errors that I can't compare 2 dates.






swift







share|improve this question














I have this [[String:Any]], where Every element have this:



["date":Date,"value":CGFloat]


I would like to sort by "date" key.(dates goes up or down)



 let sortedArray = array.sort { ($0["date"] as? Date) < ($1["date"] as? Date) }


Provides errors that I can't compare 2 dates.






swift




swift






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 25 '18 at 13:52









CurneliousCurnelious

3,893751103




3,893751103













  • Convert the values to structs first and stop using Any.

    – Sulthan
    Nov 25 '18 at 13:58











  • You are encouraged to use a custom struct, it makes life much easier. And with this syntax you have to use sorted {...

    – vadian
    Nov 25 '18 at 13:58








  • 3





    It is always a good idea to show the exact error messages ...

    – Martin R
    Nov 25 '18 at 14:31





















  • Convert the values to structs first and stop using Any.

    – Sulthan
    Nov 25 '18 at 13:58











  • You are encouraged to use a custom struct, it makes life much easier. And with this syntax you have to use sorted {...

    – vadian
    Nov 25 '18 at 13:58








  • 3





    It is always a good idea to show the exact error messages ...

    – Martin R
    Nov 25 '18 at 14:31



















Convert the values to structs first and stop using Any.

– Sulthan
Nov 25 '18 at 13:58





Convert the values to structs first and stop using Any.

– Sulthan
Nov 25 '18 at 13:58













You are encouraged to use a custom struct, it makes life much easier. And with this syntax you have to use sorted {...

– vadian
Nov 25 '18 at 13:58







You are encouraged to use a custom struct, it makes life much easier. And with this syntax you have to use sorted {...

– vadian
Nov 25 '18 at 13:58






3




3





It is always a good idea to show the exact error messages ...

– Martin R
Nov 25 '18 at 14:31







It is always a good idea to show the exact error messages ...

– Martin R
Nov 25 '18 at 14:31














1 Answer
1






active

oldest

votes


















4














sort is mutating so array need to be var and no return , and either force unwrap or



array.sort { ($0["date"] as! Date  ) < ($1["date"] as! Date   ) }


or



array.sort { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



or sorted



let sortedArray  =   array.sorted { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



Strongly recommend



struct Root { 

  let date:Date 

  let value:CGFloat 

}     





var array = [Root(date: Date(), value: 12),Root(date: Date(), value: 14),Root(date: Date(), value: 15)]



 let sortedArray =   array.sorted {  $0.date < $1.date }



// or



let sortedArray = array.sorted {  $0.date.compare($1.date) == .orderedAscending }





share|improve this answer


























  • Thanks , for the first example I get a warning : Variable 'sortedArray' inferred to have type '()', which may be unexpected

    – Curnelious
    Nov 25 '18 at 14:00











  • I know Struct is better, but changing to it will require changing the whole code.

    – Curnelious
    Nov 25 '18 at 14:05






  • 2





    The current date (Date()) as default value could cause funny unexpected behavior particularly both values of Date() could be different. 😉

    – vadian
    Nov 25 '18 at 14:07











  • Thanks. Can you show please how would you answer this if it was array of Struct ?

    – Curnelious
    Nov 25 '18 at 14:08






  • 4





    @Sh_Khan For a fixed date far far away there is distantPast and distantFuture.

    – vadian
    Nov 25 '18 at 14:11











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









4














sort is mutating so array need to be var and no return , and either force unwrap or



array.sort { ($0["date"] as! Date  ) < ($1["date"] as! Date   ) }


or



array.sort { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



or sorted



let sortedArray  =   array.sorted { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



Strongly recommend



struct Root { 

  let date:Date 

  let value:CGFloat 

}     





var array = [Root(date: Date(), value: 12),Root(date: Date(), value: 14),Root(date: Date(), value: 15)]



 let sortedArray =   array.sorted {  $0.date < $1.date }



// or



let sortedArray = array.sorted {  $0.date.compare($1.date) == .orderedAscending }





share|improve this answer


























  • Thanks , for the first example I get a warning : Variable 'sortedArray' inferred to have type '()', which may be unexpected

    – Curnelious
    Nov 25 '18 at 14:00











  • I know Struct is better, but changing to it will require changing the whole code.

    – Curnelious
    Nov 25 '18 at 14:05






  • 2





    The current date (Date()) as default value could cause funny unexpected behavior particularly both values of Date() could be different. 😉

    – vadian
    Nov 25 '18 at 14:07











  • Thanks. Can you show please how would you answer this if it was array of Struct ?

    – Curnelious
    Nov 25 '18 at 14:08






  • 4





    @Sh_Khan For a fixed date far far away there is distantPast and distantFuture.

    – vadian
    Nov 25 '18 at 14:11
















4














sort is mutating so array need to be var and no return , and either force unwrap or



array.sort { ($0["date"] as! Date  ) < ($1["date"] as! Date   ) }


or



array.sort { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



or sorted



let sortedArray  =   array.sorted { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



Strongly recommend



struct Root { 

  let date:Date 

  let value:CGFloat 

}     





var array = [Root(date: Date(), value: 12),Root(date: Date(), value: 14),Root(date: Date(), value: 15)]



 let sortedArray =   array.sorted {  $0.date < $1.date }



// or



let sortedArray = array.sorted {  $0.date.compare($1.date) == .orderedAscending }





share|improve this answer


























  • Thanks , for the first example I get a warning : Variable 'sortedArray' inferred to have type '()', which may be unexpected

    – Curnelious
    Nov 25 '18 at 14:00











  • I know Struct is better, but changing to it will require changing the whole code.

    – Curnelious
    Nov 25 '18 at 14:05






  • 2





    The current date (Date()) as default value could cause funny unexpected behavior particularly both values of Date() could be different. 😉

    – vadian
    Nov 25 '18 at 14:07











  • Thanks. Can you show please how would you answer this if it was array of Struct ?

    – Curnelious
    Nov 25 '18 at 14:08






  • 4





    @Sh_Khan For a fixed date far far away there is distantPast and distantFuture.

    – vadian
    Nov 25 '18 at 14:11














4












4








4







sort is mutating so array need to be var and no return , and either force unwrap or



array.sort { ($0["date"] as! Date  ) < ($1["date"] as! Date   ) }


or



array.sort { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



or sorted



let sortedArray  =   array.sorted { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



Strongly recommend



struct Root { 

  let date:Date 

  let value:CGFloat 

}     





var array = [Root(date: Date(), value: 12),Root(date: Date(), value: 14),Root(date: Date(), value: 15)]



 let sortedArray =   array.sorted {  $0.date < $1.date }



// or



let sortedArray = array.sorted {  $0.date.compare($1.date) == .orderedAscending }





share|improve this answer















sort is mutating so array need to be var and no return , and either force unwrap or



array.sort { ($0["date"] as! Date  ) < ($1["date"] as! Date   ) }


or



array.sort { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



or sorted



let sortedArray  =   array.sorted { ($0["date"] as? Date ?? Date()  ) < ($1["date"] as? Date ?? Date() ) }



Strongly recommend



struct Root { 

  let date:Date 

  let value:CGFloat 

}     





var array = [Root(date: Date(), value: 12),Root(date: Date(), value: 14),Root(date: Date(), value: 15)]



 let sortedArray =   array.sorted {  $0.date < $1.date }



// or



let sortedArray = array.sorted {  $0.date.compare($1.date) == .orderedAscending }






share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 25 '18 at 14:13

























answered Nov 25 '18 at 13:55









Sh_KhanSh_Khan

45.2k51432




45.2k51432













  • Thanks , for the first example I get a warning : Variable 'sortedArray' inferred to have type '()', which may be unexpected

    – Curnelious
    Nov 25 '18 at 14:00











  • I know Struct is better, but changing to it will require changing the whole code.

    – Curnelious
    Nov 25 '18 at 14:05






  • 2





    The current date (Date()) as default value could cause funny unexpected behavior particularly both values of Date() could be different. 😉

    – vadian
    Nov 25 '18 at 14:07











  • Thanks. Can you show please how would you answer this if it was array of Struct ?

    – Curnelious
    Nov 25 '18 at 14:08






  • 4





    @Sh_Khan For a fixed date far far away there is distantPast and distantFuture.

    – vadian
    Nov 25 '18 at 14:11



















  • Thanks , for the first example I get a warning : Variable 'sortedArray' inferred to have type '()', which may be unexpected

    – Curnelious
    Nov 25 '18 at 14:00











  • I know Struct is better, but changing to it will require changing the whole code.

    – Curnelious
    Nov 25 '18 at 14:05






  • 2





    The current date (Date()) as default value could cause funny unexpected behavior particularly both values of Date() could be different. 😉

    – vadian
    Nov 25 '18 at 14:07











  • Thanks. Can you show please how would you answer this if it was array of Struct ?

    – Curnelious
    Nov 25 '18 at 14:08






  • 4





    @Sh_Khan For a fixed date far far away there is distantPast and distantFuture.

    – vadian
    Nov 25 '18 at 14:11

















Thanks , for the first example I get a warning : Variable 'sortedArray' inferred to have type '()', which may be unexpected

– Curnelious
Nov 25 '18 at 14:00





Thanks , for the first example I get a warning : Variable 'sortedArray' inferred to have type '()', which may be unexpected

– Curnelious
Nov 25 '18 at 14:00













I know Struct is better, but changing to it will require changing the whole code.

– Curnelious
Nov 25 '18 at 14:05





I know Struct is better, but changing to it will require changing the whole code.

– Curnelious
Nov 25 '18 at 14:05




2




2





The current date (Date()) as default value could cause funny unexpected behavior particularly both values of Date() could be different. 😉

– vadian
Nov 25 '18 at 14:07





The current date (Date()) as default value could cause funny unexpected behavior particularly both values of Date() could be different. 😉

– vadian
Nov 25 '18 at 14:07













Thanks. Can you show please how would you answer this if it was array of Struct ?

– Curnelious
Nov 25 '18 at 14:08





Thanks. Can you show please how would you answer this if it was array of Struct ?

– Curnelious
Nov 25 '18 at 14:08




4




4





@Sh_Khan For a fixed date far far away there is distantPast and distantFuture.

– vadian
Nov 25 '18 at 14:11





@Sh_Khan For a fixed date far far away there is distantPast and distantFuture.

– vadian
Nov 25 '18 at 14:11




















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