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?](https://stackoverflow.com/questions/32269373/how-to-remove-whitespace-in-string-using-pure-swift) — jscs, Aug 10 '19 at 18:30

score 0 · Answer 1 · answered Aug 10 '19 at 06:15

0

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

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

answered Aug 10 '19 at 06:15

Vikas Gupta

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I want to allow one white space, and/or one period. This will remove all whitespaces – Eccles Aug 10 '19 at 06:23

vadian · Answer 2 · 2019-08-10T07:26:34.943

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)

How to check for multiple whitespaces in a string

2 Answers2