Swift: Replacing substring using regular expression not working

Question

I'm building a regular expression to detect if match the following string but its not working. Here is my code:

var str = "asdasdd.ASD98ASD09ASD098ASD098ADS908"
let commsRegex = "\\D[a-z]{7,}.[^a-zA-Z0-9]{28,}"

if (str.rangeOfString(commsRegex,options: .RegularExpressionSearch) != nil) {

         str = "itwork.yes"   
        }

Any of you knows what I'm doing wrong?

I'll really appreciate your help

@LeoDabus this works great. Question if I asdasdd to add~sdd doesn't work what can modify to able to detect "and~sdd.ASD98ASD09ASD098ASD098ADS908" for example — user2924482
– user2924482, Commented Nov 17, 2016 at 17:52
Is ~ required to be at an specific place (middle of that first 7 chars group)"[a-z]{3}~[a-z]{3}\\.[A-Z0-9]{28}$" if not "[a-z~]{7}\\.[A-Z0-9]{28}$" — Leo Dabus
– Leo Dabus, Commented Nov 17, 2016 at 23:58

Kevin DiTraglia · Accepted Answer · 2016-11-17 01:09:27Z

2

Your reg-ex appears to be incorrect, particularly this part:

[ ^ a-zA-Z0-9]

Notice the bolded ^, this means match only characters not in a-z A-Z and 0-9. I suspect you want to remove that character from your regex.

Also, I'm not sure about the \\D, this will match any non-digit, but your string starts with 7 characters which seems to match the next part, perhaps that should be removed as well if you expect that string to match the regex.

answered Nov 17, 2016 at 1:09

Kevin DiTraglia

26.2k20 gold badges95 silver badges145 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Rob Over a year ago

Yep. Also, the failure to escape the . character (as shown by Leo) is also a problem. Also, I assume he included the ^ to try to match the start of the string, so it's not so much as "remove" the ^ as to just move it to the start of the pattern, before the [ and ].

Collectives™ on Stack Overflow

Swift: Replacing substring using regular expression not working

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related