Message-ID: <20210209152912.24f4d0c5@rolf-Latitude-E7470>
Date: 2021-02-09T02:29:12Z
From: Rolf Turner
Subject: Help with regular expressions.
I want to deal with strings of the form "a.b.c" and to change (using
sub() or whatever is appropriate) the second "." to a "-", i.e. to
change "a.b.c" to "a.b-c". I want to leave the first "." as-is.
I guess I could do a gsub(), changing all "."s to "-"s, and then do
a sub() changing the first "-" back to a ".". But this seems very
kludgy. There must be a sexier way. Mustn't there? Is there regular
expression syntax for picking out the second occurence of a particular
string?
cheers,
Rolf Turner
--
Honorary Research Fellow
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276