Thank you both. Wow. Looks like it really is worth the effort! I played around on regex101.com, but the problem is if you don’t know the terms for what you want to do, its really hard to find the appropriate symbol.
Thanks again. > On 1 Aug 2018, at 6:24 pm, Brian Milby via use-livecode > <use-livecode@lists.runrev.com> wrote: > > Don’t have time to test right now but something along these lines: > > \b[0-9] ?(yr|yo|year) > > \b is a word break > ? Means 0 or 1 of previous char (space) > | is alternate separator > > Thanks, > Brian > On Aug 1, 2018, 11:58 AM -0500, Stephen MacLean via use-livecode > <use-livecode@lists.runrev.com>, wrote: >> Hi David, >> >> While no expert on Regex, there are some online tools and libraries that you >> can use to work out the appropriate regex before putting it into your LC >> script. >> >> Some sites I use: >> >> https://www.regextester.com >> >> https://regex101.com >> >> https://www.rexegg.com/regex-quickstart.html >> >> and >> >> http://www.regexlib.com >> >> which has a lot of pre-built regex codes and examples. Most work without >> issue when putting them into LCS. >> >> You can also take a look, if you haven’t already, at an example that I made >> using LCS and LCB, rsIsValid: >> https://forums.livecode.com/viewtopic.php?t=26653 >> >> HTH! >> >> Steve MacLean >> >>> On Aug 1, 2018, at 12:34 PM, David V Glasgow via use-livecode >>> <use-livecode@lists.runrev.com> wrote: >>> >>> >>> I am just dipping my toes in the shallows of regex, and have already >>> stubbed my toe on a rock. Well two, actually. >>> >>> I am looking to identify the lines of a field (that contain lots of words >>> and symbols with no particular structure or separator ) finding age related >>> terms, which can be in a variety of forms. I made a list of the terms that >>> I want to use. >>> >>> First problem: >>> >>> I use the following filter line >>> >>> filter lines of it with regex pattern i >>> >>> … where i is a keyword lifted from my list. Oddly, where i is just ordinary >>> characters, it works fine. However if it includes a wildcard symbol, it >>> chokes with “execution error at line 9 (matchChunk: error in pattern >>> expression), char 1”. For example, if i = child* (intending to match child, >>> childlike, childhood, childish etc). I know that’s a bad example, because >>> just ‘child' will do the trick. However, there seems to be some voodoo >>> needed to put a regex expression into a variable, is that right? >>> >>> Second problem is the sheer brain ache from trying to work out how to >>> efficiently match lines containing 8 yo, 8 yr, 8yr, 8yo, 8 year and 8year, >>> but not 18 year, 38yo etc etc. >>> >>> The simplest way would be to include all variants in the keyword list. >>> However, that means more sweeps through the repeat loop. And it wouldn’t >>> solve the problem of excluding 18 yo, 28 yo matching, unless I can >>> construct a regex expression which will test the absence of any number >>> between 1 and 9 immediately before the actual string I am finding. >>> >>> Am I on a wild goose chase here? >>> >>> >>> >>> >>> Best Wishes, >>> David Glasgow >>> >>> >>> <http://www.i-psych.co.uk/> <https://twitter.com/iPsychApps> >>> >>> <https://twitter.com/iPsychApps> <http://uk.linkedin.com/in/davidvglasgow> >>> <http://uk.linkedin.com/in/davidvglasgow> >>> _______________________________________________ >>> use-livecode mailing list >>> use-livecode@lists.runrev.com >>> Please visit this url to subscribe, unsubscribe and manage your >>> subscription preferences: >>> http://lists.runrev.com/mailman/listinfo/use-livecode >> >> >> >> _______________________________________________ >> use-livecode mailing list >> use-livecode@lists.runrev.com >> Please visit this url to subscribe, unsubscribe and manage your subscription >> preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
