Extracting substring from String in iOS Swift

Question

I have created some strings as below:

let firstname = ""
let lastname = ""    
let myInfo = "Dana<fname>Dana<lname>CEO<occupation>0123456<hp>01234567<wp>dana@gmail.com<email>"

I want to extract certain parts out of that string. For example, I want to assign the part before <fname> to the firstname variable, and the part before <lname> to the lastname variable.

look over this: http://www.learnswiftonline.com/reference-guides/string-reference-guide-for-swift/. It may be helpful... — Mr. Xcoder, Jan 08 '17 at 20:22
You're welcome! If you have any other questions related to string trimming feel free to ask! — Mr. Xcoder, Jan 08 '17 at 20:31

score 1 · Accepted Answer · answered Jan 08 '17 at 20:28

Just a fast idea, probably there is some simpler way to do that:

let myInfo = "Dana<fname>Dana<lname>CEO<occupation>0123456<hp>01234567<wp>dana@gmail.com<email>"
let components = myInfo.components(separatedBy: CharacterSet(charactersIn: "<>"))

let values = components.enumerated().filter { $0.offset % 2 == 0 }.map { $0.element }
let keys = components.enumerated().filter { $0.offset % 2 == 1 }.map { $0.element }

var namedValues: [String: String] = [:]

for i in keys.indices {
    namedValues[keys[i]] = values[i]
}

print(namedValues)

Then just:

let firstName = namedValues["fname"]
let lastName = namedValues["lname"]

this work like a charm. Also, exactly the way i wanted. – Mg Dana Jan 08 '17 at 20:33 — Mg Dana, Jan 08 '17 at 20:33

score 0 · Answer 2 · edited May 23 '17 at 12:07

0

You can replace occurrences of string with another string to do it. Example: Any way to replace characters on Swift String?

edited May 23 '17 at 12:07

Community

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1

answered Jan 08 '17 at 20:22

Axel

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I was able to figure it out with componentSeperatedByString. I also have to tweak my string as well. Thank you for your help. – Mg Dana Jan 08 '17 at 20:30

Extracting substring from String in iOS Swift

2 Answers2