r"{single quote ' and double quote " and one at the end "}"
[1] "single quote ' and double quote \" and one at the end \""
See ?Quotes for details.
The C++ syntax, on which the R syntax is based, is strictly more
powerful than the Python approach: it allows a raw string to contain
_any_ sequence of characters by adjusting the delimiter. To simplify
the implementation R only allows dashes for adjustment, but that is
sufficient:
r"{'`"}"
[1] "'`\""
r"-{r"{'`"}"}-"
[1] "r\"{'`\"}\""
Best,
luke
On Fri, 21 Feb 2020, Juan Telleria Ruiz de Aguirre wrote:
Dear R Developers,
As regards "Support for Dashes in the Raw String Delimiter" from commit:
https://github.com/wch/r-source/commit/4d4781ad19890193d5eb458d71f18d7e53ee73c5
Would it be possible to support in addition to r"" Syntax, for not escaping
backlash character in strings, also support """ """ (Python Like Syntax),
for also allowing to have within the character string the closing sequence
" symbol?
See Python's article on string literals for further information:
https://docs.python.org/2.0/ref/strings.html
Thanks!
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Luke Tierney
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa Phone: 319-335-3386
Department of Statistics and Fax: 319-335-3017
Actuarial Science
241 Schaeffer Hall email: luke-tier...@uiowa.edu
Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu
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