regex: Extract then delete
18 views (last 30 days)
Show older comments
Is there a regex function that can extract matched strings and delete them after? I would like to do this without searching over the string twice using regexp(str, expr, 'match') followed by regexprep(str, expr, '').
0 Comments
Accepted Answer
Stephen23
on 4 Jul 2019
Edited: Stephen23
on 4 Jul 2019
"Is there a regex function that can extract matched strings and delete them after?"
Not really.
You could do something like this with regexprep and dynamic expressions to store the matched data in a workspace variable, but this will be slow, complex, and rather fragile.
One simple and efficient workaround would be to use both the match and split outputs: this example matches and removes the digits, leaving only the alphabetic characters:
>> S = 'abcd1234efghi6789jklm';
>> [X,Y] = regexp(S,'\d+','match','split');
>> Z = [Y{:}] % the new string with substrings removed
Z =
abcdefghijklm
>> X{:} % the matched substrings
ans =
1234
ans =
6789
More Answers (0)
See Also
Categories
Find more on String Parsing in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!