Ciao Mohammad To get a preciser match I'd like to know where in the number "e" can appear.
Its it *always* near the end? For instance ... +1.23e4_dp -1.23e4_dp 1.236e+5_dp -1.23e-5_wp In these "e" is *left-offset* from "_" either 2 or 3. In that *always* the case? TT On Sunday, 25 August 2019 07:17:33 UTC+2, Mohammad wrote: > > Thanks Josiah, > It works great! The only point should be mentioned is it also matches > wrong cases, but considering a correct number it is not a big deal. > > Example > > eee_dp > 1.23eee45_dp > eee111.34_dp > > Note: A number with/without scientific notation starts with number or > float point like (1.23e3 or .123e3) > so, one improvement is to prevent match against *e123*. > the second improvement may be to prevent more than one *e*. > > Cheers > Mohammad > > > > > On Saturday, August 24, 2019 at 11:29:03 PM UTC+4:30, @TiddlyTweeter wrote: >> >> Mohammad wrote: >>> >>> Yes, as Eric explained these are scientific notation. I forgot to add >>> they can have positive or negative sign like >>> >>> +1.23e4_dp >>> -1.23e4_dp >>> >>> 1.236e+5_dp >>> -1.23e-5_wp >>> >> >> It is an interesting case. Like with the dates. It can be matched quite >> simply by PATTERN. But the pattern will match things you might overlook. >> >> For the specific case a "pattern-match" for a field containing a string >> (and only that) would be ... >> >> ^([\-+.0-9e]+_[A-Za-z]+)$ >> >> This would likely be all you'd need?? >> >> But it could be made more precise if needed. >> >> Here is a test match (and one problem) ... the green arrow -> indicates >> the match ... >> >> [image: Annotation 2019-08-24 205231.jpg] >> >> >> Its a fact regex isn't "determinate" in the same way normal code is. That >> can lead to much confusion. Testing against data is the best way to ensure >> a regex is good enough for its purpose. >> >> TT >> > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/9553940a-7336-4abe-ae7b-f73545640752%40googlegroups.com.
