array from an array of arrays - Swift iOS [duplicate]

Question

I have my current array like this...

[
  ["Ahmedabad"],
  ["Surat"],
  ["Rajkot"],
  ["Junagadh"],
  ["Jamnagar"],
  ["Bhavnagar"],
  ["Amreli"]
]

And I want output in single String array [String] like..

["Ahmedabad", "Surat", "Rajkot", "Junagadh", "Jamnagar", "Bhavnagar", "Amreli"]

Ashvin · Accepted Answer · 2022-08-30 16:38:52Z

0

Simple solution you can apply:

let cityListarrays = [
  ["Ahmedabad"],
  ["Surat"],
  ["Rajkot"],
  ["Junagadh"],
  ["Jamnagar"],
  ["Bhavnagar"],
  ["Amreli"]
]

let newListArray = cityListarrays.flatMap { object in
    object
}

print(newListArray)

Output:

["Ahmedabad", "Surat", "Rajkot", "Junagadh", "Jamnagar", "Bhavnagar", "Amreli"]

answered Aug 30, 2022 at 16:38

Ashvin

9,1115 gold badges43 silver badges59 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Leo Dabus Over a year ago

Why not simply cityListarrays.joined()?

Ashvin Over a year ago

@LeoDabus I tried but it gives.. FlattenSequence<Array<Array<String>>>(_base: [["Ahmedabad"], ["Surat"], ["Rajkot"], ["Junagadh"], ["Jamnagar"], ["Bhavnagar"], ["Amreli"]])

Leo Dabus Over a year ago

That's correct. If you need an array you have to initialize it Array(cityListarrays.joined()) but this will duplicate the memory usage.

Collectives™ on Stack Overflow

array from an array of arrays - Swift iOS [duplicate]

1 Answer 1

3 Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Linked

Related