How to remove space before end of a String in Swift

Question

I have a String that has 2 whitespaces and i would like to only remove the last space in the String and also remove the last text. components(separatedBy: " ") splits test where there is a space which i don't wanna do.

Current Text

let teamName = "Aston Villa -1"

I would like it to be like this

teamName = "Aston Villa"

This is coming from the backend, so i just can't remove it like that because the text is normally different. All i want to get is the team name. Thats it. I could just split it and add [0] and [1] together but i don't wanna do it that way — sk123, May 06 '20 at 11:51
Does this answer your question? [Remove last character from string. Swift language](https://stackoverflow.com/questions/24122288/remove-last-character-from-string-swift-language) — CodeLikeBeaker, May 06 '20 at 11:51
You have to be more specific, what can the last number be. Is it always negative, can it be more than one figure, etc. — koen, May 06 '20 at 11:55
It can be anything. Could be a number of a word. All i need to is to remove the second space in the string — sk123, May 06 '20 at 11:56
@sk123, please see the link I posted in the above comment. I believe that will answer your question - Thanks — CodeLikeBeaker, May 06 '20 at 11:56
You can iterate through all chars of the string. When you have a whitespaces safe the index of it. After that get the last index from the saved values and with replacingCharacters(in: <#T##RangeExpression#>, with: <#T##StringProtocol#>) you can only replace the last whitespace. — Christian, May 06 '20 at 11:59
That one i just split it and take the first word in the array [0] using `components(separatedBy: " ")` — sk123, May 06 '20 at 12:02
There is some uncertainty as to what you are asking exactly so maybe you could update your questions with some more examples, like "Liverpool -1" or "Aston Villa -1 x" if they are relevant. — Joakim Danielson, May 06 '20 at 14:03

vadian · Accepted Answer · 2020-05-06T12:10:17.303

This is a solution with Regular Expression.

let teamName = "Aston Villa -1"
let trimmedTeamName = teamName.replacingOccurrences(of: "(?:\\s[^\\s]+)$", with: "", options: .regularExpression)

The pattern searches backwards (?:) for a whitespace character (\\s) followed by 1 or more non-whitespace characters ([^\\s]+) at the end of the string ($)

Alternatively you can use range(of with the .backwards option

if let rangeOfLastWhiteSpace = teamName.range(of: " ", options: .backwards) {
    let trimmedTeamName = String(teamName[..<rangeOfLastWhiteSpace.lowerBound])
}

score 0 · Answer 2 · answered May 06 '20 at 12:11

0

Split the string into the array ["Aston", "Villa", "-1"]. Drop the last element of the array: ["Aston", "Villa"]. Join the array back together "Aston Villa".

let fixedTeamName = teamName.split(separator: " ")
    .dropLast()
    .joined(separator: " ")

answered May 06 '20 at 12:11

Jeffery Thomas

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score 0 · Answer 3 · 2020-05-06T14:34:14.940

0

let kutcer = "Aston Villa -1"
kutcer.lastIndex(of: " ").map( kutcer.prefix(upTo:) ) == "Aston Villa" // true

…and if you need it as a non-optional String:

kutcer
.lastIndex(of: " ")
.map( kutcer.prefix(upTo:) )
.map(String.init)
?? kutcer

edited May 06 '20 at 14:34

answered May 06 '20 at 13:04

koen · Answer 4 · 2020-05-06T12:07:24.963

-2

This should work, also for one word team names.

var teamName = "Aston Villa -1"

var foundSpace = false

while foundSpace == false {
    if teamName.removeLast() == " " {
        foundSpace = true
    }
}

print(teamName) //  "Aston Villa"

edited May 06 '20 at 12:07

answered May 06 '20 at 12:02

koen

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How to remove space before end of a String in Swift

4 Answers4