B4J Question strange issue with split (both string functions and Regex) and "." as separator

[giggetto71]

Hi,
I am facing a strange issue trying to split a string separated by ".".

dim Text1 as string, TempList as List
sf As JStringFunctions

Text1 = "info1.info2"
TempList = Regex.Split(".",Text1)
'or'
TempList = sf.Split(Text1,".")

in both cases TempList is empty while it works (for both cases) just fine with any other separator (",",";",etc..).
Any reason why "." is not working?
thanks

 

[LucaMs]

Any reason why "." is not working?

I don't know jStringFunctions but usually you have to "escape" special chars, like dot (".").
Regex, for example:

Regex.Split("\.", YourVariable)

 

[LucaMs]

BTW where did you get jStringFunction from? I have jStringUtils.


EDIT - Here: https://www.b4x.com/android/forum/threads/jstringfunctions-beta.36595/post-215124

Anyway, use Regex.

 

[giggetto71]

I think it's an old lib. I don't use it (I normally use Regex) I have just tried just to compare and see if for some reasons Regex and StringFunctions were behaving different but they don't.

 

[MegatenFreak]

"." is indeed a special character, and as was already pointed out, it needs to be escaped: "\."
Here's a list of common regular expression special characters:

Table 9 : List of special characters for regular expression search.

Download Table | List of special characters for regular expression search. from publication: Computational Melody Analysis | Computation | ResearchGate, the professional network for scientists.

www.researchgate.net