[R] matching period with perl regular expression
dieter.menne at menne-biomed.de
Thu May 14 10:40:43 CEST 2009
Gabor Grothendieck <ggrothendieck <at> gmail.com> writes:
> R interprets backslash to give special meaning to the next character, i.e.
> it strips off the backslash and send the following character to gsub
> possibly reinterpreting it specially (for example \n is newline). Thus
> a backslash will never get to gsub unless you use a double backslash.
To quote Peter Dalgaard:
"The generic rule for backslashes is that you need twice as many as you thought"
Only make sure that you have the right stopping rule for recursive evaluation of
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