Thanks Bert, This works, but if in my text there are more than one patterns then fails to generate desired result.
library(stringr) str_extract_all(paste("ab{cd$ }ed", "ab{cad$ }ed", collapse = " "), ".*(\\{.*\\}).*") This generates below - [[1]] [1] "ab{cd$ }ed ab{cad$ }ed" I was expecting I would get a vector of length 2 with desired pattern. Where did I make any mistake? Thanks, On Thu, Sep 12, 2019 at 10:29 PM Bert Gunter <bgunter.4...@gmail.com> wrote: > > > sub(".*(\\{.*\\}).*", "\\1","ab{cd$ }ed") > [1] "{cd$ }" > > Use ".+" instead of ".*" within the {} if you don't want to return empty {}'s. > > You might wish to use the stringr package for string matching and > manipulation, as it provides a more user friendly and consistent interface to > these tasks. > > > Bert Gunter > > "The trouble with having an open mind is that people keep coming along and > sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) > > > On Thu, Sep 12, 2019 at 9:31 AM Christofer Bogaso > <bogaso.christo...@gmail.com> wrote: >> >> Hi, >> >> I am wondering on what is the correct way to select a pattern which goes as - >> >> {"(any character with any length)"} >> >> The expressions " {" " and " "} " both are included in the pattern. >> >> For example, the lookup of the above pattern in the text " >> {"asaf455%"}57573blabla " will result in {"asaf455%"} >> >> Any help will be highly appreciated. >> >> Thanks, >> >> ______________________________________________ >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.