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

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

edited Nov 15 '18 at 9:12

ielyamani

7,94962761

asked Nov 15 '18 at 9:11

Saad Riaz

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

|
show 2 more comments

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

edited Nov 15 '18 at 9:12

ielyamani

7,94962761

asked Nov 15 '18 at 9:11

Saad Riaz

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

|
show 2 more comments

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

edited Nov 15 '18 at 9:12

ielyamani

7,94962761

asked Nov 15 '18 at 9:11

Saad Riaz

346

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

edited Nov 15 '18 at 9:12

ielyamani

7,94962761

asked Nov 15 '18 at 9:11

Saad Riaz

346

edited Nov 15 '18 at 9:12

ielyamani

7,94962761

asked Nov 15 '18 at 9:11

Saad Riaz

346

edited Nov 15 '18 at 9:12

ielyamani

7,94962761

edited Nov 15 '18 at 9:12

ielyamani

7,94962761

edited Nov 15 '18 at 9:12

ielyamani

7,94962761

asked Nov 15 '18 at 9:11

Saad Riaz

346

asked Nov 15 '18 at 9:11

Saad Riaz

346

asked Nov 15 '18 at 9:11

Saad Riaz

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

|
show 2 more comments

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

|
show 2 more comments

2 Answers
2

active

oldest

votes

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"]

answered Nov 15 '18 at 9:23

ielyamani

7,94962761

1

did exactly as I wanted. thanks :)

– Saad Riaz
Nov 15 '18 at 9:33

add a comment |

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.

answered Nov 15 '18 at 9:15

Andreas Oetjen

4,45611125

sure, thank you @Andreas

– Saad Riaz
Nov 15 '18 at 9:39

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

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"]

answered Nov 15 '18 at 9:23

ielyamani

7,94962761

1

did exactly as I wanted. thanks :)

– Saad Riaz
Nov 15 '18 at 9:33

add a comment |

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"]

answered Nov 15 '18 at 9:23

ielyamani

7,94962761

1

did exactly as I wanted. thanks :)

– Saad Riaz
Nov 15 '18 at 9:33

add a comment |

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"]

answered Nov 15 '18 at 9:23

ielyamani

7,94962761

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"]

answered Nov 15 '18 at 9:23

ielyamani

7,94962761

answered Nov 15 '18 at 9:23

ielyamani

7,94962761

answered Nov 15 '18 at 9:23

ielyamani

7,94962761

answered Nov 15 '18 at 9:23

ielyamani

7,94962761

1

did exactly as I wanted. thanks :)

– Saad Riaz
Nov 15 '18 at 9:33

add a comment |

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

add a comment |

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.

answered Nov 15 '18 at 9:15

Andreas Oetjen

4,45611125

sure, thank you @Andreas

– Saad Riaz
Nov 15 '18 at 9:39

add a comment |

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.

answered Nov 15 '18 at 9:15

Andreas Oetjen

4,45611125

sure, thank you @Andreas

– Saad Riaz
Nov 15 '18 at 9:39

add a comment |

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.

answered Nov 15 '18 at 9:15

Andreas Oetjen

4,45611125

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.

answered Nov 15 '18 at 9:15

Andreas Oetjen

4,45611125

answered Nov 15 '18 at 9:15

Andreas Oetjen

4,45611125

answered Nov 15 '18 at 9:15

Andreas Oetjen

4,45611125

answered Nov 15 '18 at 9:15

Andreas Oetjen

4,45611125

sure, thank you @Andreas

– Saad Riaz
Nov 15 '18 at 9:39

add a comment |

sure, thank you @Andreas

– Saad Riaz
Nov 15 '18 at 9:39

sure, thank you @Andreas

– Saad Riaz
Nov 15 '18 at 9:39

add a comment |

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