Remove all the spaces from a string at the beginning or end - swift

Question

How can I remove all white space from the beginning and end of a string?

Like so:

"Test User Image" returns "Test User Image"

"Test User Image " returns "Test User Image"

" Test User Image " returns "Test User Image"

Question: How to remove all the white spaces from a string at the beginning or end?

Can someone please explain to me how to remove all the white spaces, I've tried with the below answers but no results yet.

How should I remove all the leading spaces from a string? - swift

How to remove all the spaces and \n\r in a String?

Any help would be greatly appreciated.

Thanks in advance.

Add the code you have tried, the solutions in the linked questions works so it’s very unclear why it isn’t working for you — Joakim Danielson
– Joakim Danielson, Commented Feb 28, 2023 at 7:50

Ali Moazenzadeh · Accepted Answer · 2023-02-28 09:32:37Z

2

You can use this:

let str = " Test User Image " str.trimmingCharacters(in: .whitespacesAndNewlines)

output: "Test User Image"

edited Feb 28, 2023 at 9:32

answered Feb 28, 2023 at 8:24

Ali Moazenzadeh

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1 Comment

vadian Over a year ago

No, the output is "Test User Image". trim does not remove spaces between two other characters. And if it did the output would be "TestUserImage". But it answers the question.

Abhijit Kotangale · Accepted Answer · 2023-02-28 10:22:33Z

Please check it out,

let name = " I am Abhijit " let trim = name.trimmingCharacters(in: .whitespaces) print(trim) print(name.count) print(trim.count)

I hope you got the answer.

CouchDeveloper · Accepted Answer · 2023-02-28 15:45:50Z

You can use name.trimmingCharacters(in:) using the WhiteSpace character set as parameter, but this has a cost because it calls the underlying NSString function.

A pure Swift implementation may look as below:

extension String { func trimmedWS() -> String { guard let start = firstIndex(where: { !$0.isWhitespace }) else { return "" } let reversedPrefix = suffix(from: start).reversed() let end = reversedPrefix.firstIndex(where: { !$0.isWhitespace })! let trimmed = reversedPrefix.suffix(from: end).reversed() return String(trimmed) } }

print(" Test User Image ".trimmedWS())

Prints: "Test User Image"

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