it would, because it would return a string instead of a numeric value, but
I like the more elaborate ones that I'm seeing.



On Mon, Dec 12, 2022 at 8:01 AM Paul Newton <paul.newton.h...@gmail.com>
wrote:

> Thanks Virgil
>
> I am not sure if your suggestion works in the case of "Methionine =
> (S)-2-amino-4-(methylsulfanyl)-butanoic acid".  I suspect it would end
> up as "methylsulfanyl" but I haven't tested it yet.
>
> Paul
>
>
> On 12/12/2022 13:48, Virgil Bierschwale wrote:
> > you can do this to get the positions, and then just get what is between
> the
> > two positions.
> >
> > store "Methionine = (S)-2-amino-4-(methylsulfanyl)-butanoic acid (2.13)"
> to
> > string
> > store '(' to left_str
> > store ')' to right_str
> >
> > *acid2 = "Methionine = (S)-2-amino-4-(methylsulfanyl)-butanoic acid"
> >
> > clear
> >
> > ? rat(left_str, string)
> > ? rat(right_str, string)
> >
> >
> >
> > On Mon, Dec 12, 2022 at 7:10 AM Paul Newton <paul.newton.h...@gmail.com>
> > wrote:
> >
> >> Hi all
> >>
> >> I've been very quiet for a while so I thought it was about time I chimed
> >> in again. I have come across the use of a regex expression in another
> >> language which works like this:
> >>
> >> acid1 = "Methionine = (S)-2-amino-4-(methylsulfanyl)-butanoic acid
> (2.13)"
> >> acid2 = "Methionine = (S)-2-amino-4-(methylsulfanyl)-butanoic acid"
> >>
> >> NumberAtEnd:= proc(S::string)
> >> description
> >>       "Extract a parenthesized number, possibly containing periods, from
> >> the end of a string":
> >> local r;
> >>       if StringTools:-RegMatch("\\(([0-9.]*)\\)$", S, r$2) then r else
> >> FAIL fi
> >> end proc:
> >>
> >> NumberAtEnd(acid1) returns "2.13"
> >> NumberAtEnd(acid2) returns "FAIL"
> >>
> >> How can this be done in VFP?  Many thanks
> >>
> >> Paul Newton
> >> ***
> >>
> >> *
> >>
> >>
> >>
[excessive quoting removed by server]

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