Sorry I haven't had a chance to reply to anyone. I feel like I dropped a 
grenade in a room and promptly bolted...

Just to say, then, that I really appreciate everyone's comments and 
suggestions. While I'm tempted to push back on some points, I don't think it's 
worth on balance, or will add much beyond what's already been said.

It's interesting to see that there appears to be at least some appetite for 
additional (f)string operators in base R... notwithstanding the valid 
objections and the difficulties raised in this thread.

Cheers,
Grant

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________________________________
From: Grant McDermott
Sent: Saturday, December 4, 2021 12:36:44 PM
To: r-devel@r-project.org <r-devel@r-project.org>
Subject: string concatenation operator (revisited)

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 `paste​0`, 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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