Hi Stelios
you can do the following:
root [10] TRegexp e("_[0-9][0-9]GeV_")
root [12] TString str1 = "energy_15GeV_meas"
root [13] str1.Contains(e)
(const Bool_t)1
root [14] str1.Index(e)
(const Ssiz_t)6
root [15] TString res = str1(e)
root [16] .p res
(class TString)"_15GeV_"
In your example I suspect a typo (see below):
On Thu, 19 Aug 2004, Stilianos Kesisoglou wrote:
> Hi,
>
> The TString class has a nice feature which is the detection
> of a regular expression within a string:
>
> Bool_t Contains(const TRegexp& pat) const
>
> Once a regexp has been detected is it possible to store this
> expression to a variable?
>
> For example for the two strings:
>
> TString str1 = "_15GeV_"
> TString str2 = "_30GeV_"
>
> the following results will be true:
>
no!
> str1.Contains("_[0-9][0-9]_GeV")
> str2.Contains("_[0-9][0-9]_GeV")
^
^
shouldnt that be:
str2.Contains("_[0-9][0-9]GeV_")
Cheers
Otto
--
Dr. Otto Schaile Department f"ur Physik, LMU M"unchen
Phone: +49 89 289 14070 Am Coulombwall 1, D-85748 Garching, Germany
Mobil: +49 160 1553598
FAX: +49 89 289 14072 EMail: Otto.Schaile@Physik.Uni-Muenchen.DE
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