Convert String to Array Character

Question

I'm creating a Puzzle Word project in Xcode 8 and Swift 3, I created SQLite file and plist file, the SQLite file has a 3 columns id, questions, and answers, and all these columns are (string), of course except id it's a integer, and my plist file is array of characters letters, my problem is How to convert column number 3 (answers) from string to array character like plist without quotation marks and square brackets?! This is my code connecting with SQLite Database (DatabaseHelper)

import GRDB

class DatabaseHelper {

    var dbQueue: DatabaseQueue = {

        var db: DatabaseQueue = DatabaseQueue()

        do {

            db = try DatabaseQueue(path: Bundle.main.path(forResource: "testDB", ofType: "sqlite")!)
            print("Connect database sqlite is OK...")

        } catch {

            print("Connect databse fail !!!")

        }

        return db

    }()

    func getDatabase(rowId: Int) -> [DatabaseModel] {

        var listDatabase = [DatabaseModel]()

        dbQueue.inDatabase { db in

            do {

                for row in try Row.fetchAll(db, "select * from QuestionTable where Id = \(rowId)") {

                    let newDatabase = DatabaseModel()
                    newDatabase.id = row.value(named: "Id") as Int
                    newDatabase.ques = row.value(named: "question") as String
                    newDatabase.ans = row.value(named: "answer") as String

                    listDatabase.append(newDatabase)

                }

            } catch {

                print("Get all database fail !!!")

            }

        }

        return listDatabase

    }

}

And this code is DatabaseModel:

import Foundation

class DatabaseModel: NSObject {

    var id: Int?
    var ques: String?
    var ans = String()

}

This code calling from database :

var dbHelpr = DatabaseHelper()
var listdata = [DatabaseModel]()

let pathRes = Bundle.main.path(forResource: fileName, ofType: fileExt)
        let pathDict = NSDictionary(contentsOfFile: pathRes!)
        var letters : [String] = pathDict?.object(forKey: "Letters") as! [String]
        listdata = dbHelpr.getDatabase(rowId: id)

//        print("\(letters.shuffled())")

        for data in listdata {

            let dataAnswer : String = data.ans

            let dataArrayAnswer = Array(dataAnswer.characters)
            print(dataAnswer)
            let lastLetters = letters.append(String(describing: dataArrayAnswer))
            print(lastLetters)

        }

And this my output in console :

enter image description here

My problem I want convert my string from Sqlite database to array characters @BallpointBen — user6012622
– user6012622, Commented Jul 12, 2017 at 17:38

Dominik Bucher · Accepted Answer · 2017-07-13 12:10:17Z

2

let myString = "This is my answer"
let chars = Array(myString)

According to title of the question, I post this code as it meet the requirements to make array of characters from String.

So according to your code, you were almost there, but just remove the characters property of String because it already is Sequence :)

let dataArrayAnswer = Array(dataAnswer)

for char in dataArrayAnswer{
//Prints next char of whatever your string is...
print(char)
}

EDIT: Another approach could be this as it converts Character array into String array:

let dataArrayAnswer: [String] = dataAnswer.characters.map{String($0)}

edited Jul 13, 2017 at 12:10

answered Jul 12, 2017 at 21:48

Dominik Bucher

2,1622 gold badges18 silver badges26 bronze badges

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

5 Comments

user6012622 Over a year ago

Thank you but when I remove characters tell me error (Cannot invoke initializer for type 'Array<_>' with an argument list of type '(String)') !! How can I fix that ?!

Dominik Bucher Over a year ago

Which Swift version are you using?

user6012622 Over a year ago

I'm using Swift 3

Dominik Bucher Over a year ago

Please provide full image with code and error you are encountering here into comments

user6012622 Over a year ago

for data in listdata { let dataAnswer : String = data.ans let dataArrayAnswer = Array(dataAnswer) for char in dataArrayAnswer { tileButton.setTitle(lettersAns.appending(String(describing:char)), for: .normal) } }

Collectives™ on Stack Overflow

Convert String to Array Character

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related