Cannot convert value of type Substring to expected argument type String - Swift 4

user_2296787 0
Viewed 20441

Trying to get substring of String and append it to array of Strings:

var stringToSplit = "TEST TEXT"
var s = [String]()
let subStr = anotherString[0 ..< 6]
s.append(subStr) // <---- HERE I GET THE ERROR

error desc

swift4 swift
2 Answers

As @Leo Dabus mentioned, you need to initialize a new String with your substring:

Change:

s.append(subStr)

To:

s.append(String(subStr))
user_55763100

my two cents for serro in different context. I was trying to get an array of "String" splitting a string. "split" gives back "Substring", for efficiency reason (as per Swift.org litre).

So I ended up doing:

let buffer = "one,two,three"
let rows = buffer.split(separator:",")

let realStrings = rows.map { subString -> String in
    return String(subString)
}

print(realStrings)

Ape can help someone else.

user_9273330
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