How to check for multiple whitespaces in a string

Question

How can I check if a string contains more than one whitespace or period?

I´m using myString.replacingOccurrences(of: ",", with: ".") to change comma to period, is there a similar function to remove whitespaces, or any other character of choice if they occur more than once?

Possible duplicate of How to remove whitespace in String using pure Swift? — jscs
– jscs, Commented Aug 10, 2019 at 18:30

vadian · Accepted Answer · 2024-02-01 14:37:47Z

1

Use Regular Expression, this removes all occurrences of two or more consecutive whitespaces or periods

myString.replacingOccurrences(of: "[\\s.]{2,}", with: "", options: .regularExpression)

or if you want to keep one whitespace or period respectively you need two filter expressions

myString.replacingOccurrences(of: "\\s{2,}", with: " ", options: .regularExpression)
    .replacingOccurrences(of: "\\.{2,}", with: ".", options: .regularExpression)

In Swift 5.7+ the syntax has become much cleaner

myString.replacing(/[\s.]{2,}/, with: "")

edited Feb 1, 2024 at 14:37

answered Aug 10, 2019 at 7:19

vadian

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Vikas Gupta · Accepted Answer · 2019-08-10 06:15:01Z

0

You can replace whitespace with 'a' using the following code:-

myString.replacingOccurrences(of: " " , with: "a")

answered Aug 10, 2019 at 6:15

Vikas Gupta

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1 Comment

Eccles Over a year ago

I want to allow one white space, and/or one period. This will remove all whitespaces

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