Hello,
Bert Gunter started a very recent R-Help thread [1] about the following
method not working.
`+.character` <- function(x, y) paste0(x, y)
The discussion is worth reading and at least partly answers to the
reason why the feature request has never made it to base R.
It goes without saying that I do not speak for the R Core team.
[1] https://stat.ethz.ch/pipermail/r-help/2021-December/473163.html
Hope this helps,
Rui Barradas
Às 22:36 de 04/12/21, Grant McDermott escreveu:
Hi all,
I wonder if the R Core team might reconsider an old feature request, as
detailed in this 2005 thread:
https://stat.ethz.ch/pipermail/r-help/2005-February/thread.html#66698
The TL;DR version is base R support for a `+.character` method. This would
essentially provide a shortcut to `paste0`, in much the same way that `\(x)`
now provides a shortcut to `function(x)`.
a = "hello "; b = "world"
a + b
[1] "hello world"
I appreciate some of the original concerns raised against a native "string1 +
string2" implementation. The above thread also provides several use-at-your-own-risk
workarounds. But sixteen years is a long time in software development and R now stands as
something of an exception on this score. Python, Julia, Stata, and SQL (among various
others) all support native string concatenation/interpolation using binary/arithmetic
operators. It's been a surprising source of frustration for students in some of the
classes I teach, particularly those coming from another language.
Many thanks for considering.
PS. I hope I didn't miss any additional discussion of this issue beyond the
original 2005 thread. My search efforts didn't turn anything else up, except
this popular Stackoverflow question:
https://stackoverflow.com/questions/4730551/making-a-string-concatenation-operator-in-r
Grant McDermott
Assistant Professor
Department of Economics
University of Oregon
www.grantmcdermott.com
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