- From: William Van Woensel <william.vanwoensel@gmail.com>
- Date: Mon, 3 Oct 2022 13:44:04 -0400
- To: tim duval <tim.duval11@gmail.com>
- Cc: "Shaw, Ryan" <ryanshaw@unc.edu>, "public-n3-dev@w3.org" <public-n3-dev@w3.org>
- Message-Id: <D91034A2-9549-46C2-B07C-E96C8B6312BD@gmail.com>
Hi Tim Note that the regex doesn’t match the “kV” at the end of your string. Also, the regex must contain at least one group (don’t think the negative lookahead counts). This one works on regex101.com: ^(?!.*\..*\.)([.\d]+) kV$ The escaped version does not work with eye but it does with jen3: (?!.*\\..*\\.)([.\\d]+) kV So, it must be a difference between prolog and java .. W > On Oct 3, 2022, at 1:19 PM, tim duval <tim.duval11@gmail.com> wrote: > > any reason why this is not working???? > > @prefix string: <http://www.w3.org/2000/10/swap/string# <http://www.w3.org/2000/10/swap/string#>> . > @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema# <http://www.w3.org/2000/01/rdf-schema#>> . > @prefix : <http://example.org/ <http://example.org/>> . > > { ("13.4 kV" "^(?!.*\\..*\\.)[.\\d]+$") string:scrape ?s . } > => { :test :has ?s } . > > On Mon, Oct 3, 2022 at 12:57 PM tim duval <tim.duval11@gmail.com <mailto:tim.duval11@gmail.com>> wrote: > will do!! thanks!!!! > > > On Mon, Oct 3, 2022 at 12:55 PM Shaw, Ryan <ryanshaw@unc.edu <mailto:ryanshaw@unc.edu>> wrote: > > > > On Oct 3, 2022, at 12:43 PM, tim duval <tim.duval11@gmail.com <mailto:tim.duval11@gmail.com>> wrote: > > > > Regarding regular expressions: > > I find that string:matches() returns a boolean whether or not the string matches the regular expression, > > I am looking to extract the number from the string based on the regular expression. > > Check out string:scrape > https://w3c.github.io/N3/spec/string.html#vocab_string_scrape <https://w3c.github.io/N3/spec/string.html#vocab_string_scrape>
Received on Monday, 3 October 2022 17:44:18 UTC