Get all keys with values for a specific date in an array of dictionaries SWIFT












0















I have an array of dictionaries:



var eventDetailsArray = [[String: String]]()

var events: [String: String] =  ["name":"block A”,  "date":"Friday, 23 Nov 2018"]

var events1: [String: String] = ["name":"block AB”, "date":"Friday, 23 Nov 2018"]

var events2: [String: String] = ["name":"block B",  "date":"Tuesday, 13 Nov 2018"]

var events3: [String: String] = ["name":"block C",  "date":"Wednesday, 28 Nov 2018"]



eventDetailsArray.append(events)

eventDetailsArray.append(events1)

eventDetailsArray.append(events2)

eventDetailsArray.append(events3)



var eventNamesArray = [String]()


I want an output array with event names for date selected only.
E.g; if ”Friday, 23 Nov 2018" is selected; I should get "block A” and "block AB” in the output array in SWIFT






ios swift







share|improve this question

























  • You can use filter() for that. Did you try anything?

    – Larme
    Nov 15 '18 at 9:14











  • I am new to programming, However I tried for loop for that: for i in eventDetailsArray{ } but nothing fruitful

    – Saad Riaz
    Nov 15 '18 at 9:15













  • And what was your attempt? There is nothing wrong in doing a for loop, if you are new to programming. That's basic logic that might help you in the future instead of using a high level method like filter() (which is valid too).

    – Larme
    Nov 15 '18 at 9:17











  • The given example doesn't compile. Please formulate a Minimal, Complete, and Verifiable Examples

    – Rakesha Shastri
    Nov 15 '18 at 9:17











  • You are encouraged to use a custom struct or class and Date instances for the dates. One reason is that this string representation of a date is not sortable

    – vadian
    Nov 15 '18 at 9:25


















0















I have an array of dictionaries:



var eventDetailsArray = [[String: String]]()

var events: [String: String] =  ["name":"block A”,  "date":"Friday, 23 Nov 2018"]

var events1: [String: String] = ["name":"block AB”, "date":"Friday, 23 Nov 2018"]

var events2: [String: String] = ["name":"block B",  "date":"Tuesday, 13 Nov 2018"]

var events3: [String: String] = ["name":"block C",  "date":"Wednesday, 28 Nov 2018"]



eventDetailsArray.append(events)

eventDetailsArray.append(events1)

eventDetailsArray.append(events2)

eventDetailsArray.append(events3)



var eventNamesArray = [String]()


I want an output array with event names for date selected only.
E.g; if ”Friday, 23 Nov 2018" is selected; I should get "block A” and "block AB” in the output array in SWIFT






ios swift







share|improve this question

























  • You can use filter() for that. Did you try anything?

    – Larme
    Nov 15 '18 at 9:14











  • I am new to programming, However I tried for loop for that: for i in eventDetailsArray{ } but nothing fruitful

    – Saad Riaz
    Nov 15 '18 at 9:15













  • And what was your attempt? There is nothing wrong in doing a for loop, if you are new to programming. That's basic logic that might help you in the future instead of using a high level method like filter() (which is valid too).

    – Larme
    Nov 15 '18 at 9:17











  • The given example doesn't compile. Please formulate a Minimal, Complete, and Verifiable Examples

    – Rakesha Shastri
    Nov 15 '18 at 9:17











  • You are encouraged to use a custom struct or class and Date instances for the dates. One reason is that this string representation of a date is not sortable

    – vadian
    Nov 15 '18 at 9:25
















0












0








0








I have an array of dictionaries:



var eventDetailsArray = [[String: String]]()

var events: [String: String] =  ["name":"block A”,  "date":"Friday, 23 Nov 2018"]

var events1: [String: String] = ["name":"block AB”, "date":"Friday, 23 Nov 2018"]

var events2: [String: String] = ["name":"block B",  "date":"Tuesday, 13 Nov 2018"]

var events3: [String: String] = ["name":"block C",  "date":"Wednesday, 28 Nov 2018"]



eventDetailsArray.append(events)

eventDetailsArray.append(events1)

eventDetailsArray.append(events2)

eventDetailsArray.append(events3)



var eventNamesArray = [String]()


I want an output array with event names for date selected only.
E.g; if ”Friday, 23 Nov 2018" is selected; I should get "block A” and "block AB” in the output array in SWIFT






ios swift







share|improve this question
















I have an array of dictionaries:



var eventDetailsArray = [[String: String]]()

var events: [String: String] =  ["name":"block A”,  "date":"Friday, 23 Nov 2018"]

var events1: [String: String] = ["name":"block AB”, "date":"Friday, 23 Nov 2018"]

var events2: [String: String] = ["name":"block B",  "date":"Tuesday, 13 Nov 2018"]

var events3: [String: String] = ["name":"block C",  "date":"Wednesday, 28 Nov 2018"]



eventDetailsArray.append(events)

eventDetailsArray.append(events1)

eventDetailsArray.append(events2)

eventDetailsArray.append(events3)



var eventNamesArray = [String]()


I want an output array with event names for date selected only.
E.g; if ”Friday, 23 Nov 2018" is selected; I should get "block A” and "block AB” in the output array in SWIFT






ios swift




ios swift






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 15 '18 at 9:12









ielyamani

7,94962761




7,94962761










asked Nov 15 '18 at 9:11









Saad RiazSaad Riaz

346




346













  • You can use filter() for that. Did you try anything?

    – Larme
    Nov 15 '18 at 9:14











  • I am new to programming, However I tried for loop for that: for i in eventDetailsArray{ } but nothing fruitful

    – Saad Riaz
    Nov 15 '18 at 9:15













  • And what was your attempt? There is nothing wrong in doing a for loop, if you are new to programming. That's basic logic that might help you in the future instead of using a high level method like filter() (which is valid too).

    – Larme
    Nov 15 '18 at 9:17











  • The given example doesn't compile. Please formulate a Minimal, Complete, and Verifiable Examples

    – Rakesha Shastri
    Nov 15 '18 at 9:17











  • You are encouraged to use a custom struct or class and Date instances for the dates. One reason is that this string representation of a date is not sortable

    – vadian
    Nov 15 '18 at 9:25





















  • You can use filter() for that. Did you try anything?

    – Larme
    Nov 15 '18 at 9:14











  • I am new to programming, However I tried for loop for that: for i in eventDetailsArray{ } but nothing fruitful

    – Saad Riaz
    Nov 15 '18 at 9:15













  • And what was your attempt? There is nothing wrong in doing a for loop, if you are new to programming. That's basic logic that might help you in the future instead of using a high level method like filter() (which is valid too).

    – Larme
    Nov 15 '18 at 9:17











  • The given example doesn't compile. Please formulate a Minimal, Complete, and Verifiable Examples

    – Rakesha Shastri
    Nov 15 '18 at 9:17











  • You are encouraged to use a custom struct or class and Date instances for the dates. One reason is that this string representation of a date is not sortable

    – vadian
    Nov 15 '18 at 9:25



















You can use filter() for that. Did you try anything?

– Larme
Nov 15 '18 at 9:14





You can use filter() for that. Did you try anything?

– Larme
Nov 15 '18 at 9:14













I am new to programming, However I tried for loop for that: for i in eventDetailsArray{ } but nothing fruitful

– Saad Riaz
Nov 15 '18 at 9:15







I am new to programming, However I tried for loop for that: for i in eventDetailsArray{ } but nothing fruitful

– Saad Riaz
Nov 15 '18 at 9:15















And what was your attempt? There is nothing wrong in doing a for loop, if you are new to programming. That's basic logic that might help you in the future instead of using a high level method like filter() (which is valid too).

– Larme
Nov 15 '18 at 9:17





And what was your attempt? There is nothing wrong in doing a for loop, if you are new to programming. That's basic logic that might help you in the future instead of using a high level method like filter() (which is valid too).

– Larme
Nov 15 '18 at 9:17













The given example doesn't compile. Please formulate a Minimal, Complete, and Verifiable Examples

– Rakesha Shastri
Nov 15 '18 at 9:17





The given example doesn't compile. Please formulate a Minimal, Complete, and Verifiable Examples

– Rakesha Shastri
Nov 15 '18 at 9:17













You are encouraged to use a custom struct or class and Date instances for the dates. One reason is that this string representation of a date is not sortable

– vadian
Nov 15 '18 at 9:25







You are encouraged to use a custom struct or class and Date instances for the dates. One reason is that this string representation of a date is not sortable

– vadian
Nov 15 '18 at 9:25














2 Answers
2






active

oldest

votes


















3














You can do it like so:



let str = "Friday, 23 Nov 2018"

eventNamesArray = eventDetailsArray.compactMap { $0["date"] == str ? $0["name"] : nil }


And the result is:



print(eventNamesArray)  //["block A", "block AB"]





share|improve this answer



















  • 1





    did exactly as I wanted. thanks :)

    – Saad Riaz
    Nov 15 '18 at 9:33



















0














Just use the filter method:



var eventNamesArray = eventDetailsArray.filter { $0["date"] == "Friday, 23 Nov 2018" }


Maybe you should also consider using Date instead of Strings to represent the date. Especially, if you are interested in supporting different languages / locales.






share|improve this answer
























  • sure, thank you @Andreas

    – Saad Riaz
    Nov 15 '18 at 9:39











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2 Answers
2






active

oldest

votes








2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes









3














You can do it like so:



let str = "Friday, 23 Nov 2018"

eventNamesArray = eventDetailsArray.compactMap { $0["date"] == str ? $0["name"] : nil }


And the result is:



print(eventNamesArray)  //["block A", "block AB"]





share|improve this answer



















  • 1





    did exactly as I wanted. thanks :)

    – Saad Riaz
    Nov 15 '18 at 9:33
















3














You can do it like so:



let str = "Friday, 23 Nov 2018"

eventNamesArray = eventDetailsArray.compactMap { $0["date"] == str ? $0["name"] : nil }


And the result is:



print(eventNamesArray)  //["block A", "block AB"]





share|improve this answer



















  • 1





    did exactly as I wanted. thanks :)

    – Saad Riaz
    Nov 15 '18 at 9:33














3












3








3







You can do it like so:



let str = "Friday, 23 Nov 2018"

eventNamesArray = eventDetailsArray.compactMap { $0["date"] == str ? $0["name"] : nil }


And the result is:



print(eventNamesArray)  //["block A", "block AB"]





share|improve this answer













You can do it like so:



let str = "Friday, 23 Nov 2018"

eventNamesArray = eventDetailsArray.compactMap { $0["date"] == str ? $0["name"] : nil }


And the result is:



print(eventNamesArray)  //["block A", "block AB"]






share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 15 '18 at 9:23









ielyamaniielyamani

7,94962761




7,94962761








  • 1





    did exactly as I wanted. thanks :)

    – Saad Riaz
    Nov 15 '18 at 9:33














  • 1





    did exactly as I wanted. thanks :)

    – Saad Riaz
    Nov 15 '18 at 9:33








1




1





did exactly as I wanted. thanks :)

– Saad Riaz
Nov 15 '18 at 9:33





did exactly as I wanted. thanks :)

– Saad Riaz
Nov 15 '18 at 9:33













0














Just use the filter method:



var eventNamesArray = eventDetailsArray.filter { $0["date"] == "Friday, 23 Nov 2018" }


Maybe you should also consider using Date instead of Strings to represent the date. Especially, if you are interested in supporting different languages / locales.






share|improve this answer
























  • sure, thank you @Andreas

    – Saad Riaz
    Nov 15 '18 at 9:39
















0














Just use the filter method:



var eventNamesArray = eventDetailsArray.filter { $0["date"] == "Friday, 23 Nov 2018" }


Maybe you should also consider using Date instead of Strings to represent the date. Especially, if you are interested in supporting different languages / locales.






share|improve this answer
























  • sure, thank you @Andreas

    – Saad Riaz
    Nov 15 '18 at 9:39














0












0








0







Just use the filter method:



var eventNamesArray = eventDetailsArray.filter { $0["date"] == "Friday, 23 Nov 2018" }


Maybe you should also consider using Date instead of Strings to represent the date. Especially, if you are interested in supporting different languages / locales.






share|improve this answer













Just use the filter method:



var eventNamesArray = eventDetailsArray.filter { $0["date"] == "Friday, 23 Nov 2018" }


Maybe you should also consider using Date instead of Strings to represent the date. Especially, if you are interested in supporting different languages / locales.







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 15 '18 at 9:15









Andreas OetjenAndreas Oetjen

4,45611125




4,45611125













  • sure, thank you @Andreas

    – Saad Riaz
    Nov 15 '18 at 9:39



















  • sure, thank you @Andreas

    – Saad Riaz
    Nov 15 '18 at 9:39

















sure, thank you @Andreas

– Saad Riaz
Nov 15 '18 at 9:39





sure, thank you @Andreas

– Saad Riaz
Nov 15 '18 at 9:39


















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