Re: [Rd] class() |--> c("matrix", "arrary") [was "head.matrix ..."]
>x %inherits% "data.frame" IMHO, I think that user-defined binary operators are being over-used within the R community. I don't think that they're "cute" or stylish. I think their use should be limited to cases, where they significantly increase the readability of the code. However, readability, is a (partly) subjective topic... __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] class() |--> c("matrix", "arrary") [was "head.matrix ..."]
On 11/12/19 12:21, Abby Spurdle wrote: > > >> x %inherits% "data.frame" > > IMHO, I think that user-defined binary operators are being over-used > within the R community. > > I don't think that they're "cute" or stylish. > I think their use should be limited to cases, where they significantly > increase the readability of the code. > > However, readability, is a (partly) subjective topic... > > > You can have your own rant about "user-defined binary operators being over-used within the R community" without suggesting that my rant was rude. I don't think it was and, in any case, I was not going after a individual in particular. Contrary to popular belief and to what I tell my daughter, rolling your eyes in public is not rude at all and is actually a lot of fun. You should try it ;-) -- Hervé Pagès Program in Computational Biology Division of Public Health Sciences Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N, M1-B514 P.O. Box 19024 Seattle, WA 98109-1024 E-mail: hpa...@fredhutch.org Phone: (206) 667-5791 Fax:(206) 667-1319 __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] calls with comment attribute
In general R doesn't print the "comment" attribute of an object
> structure(1:3, comment=c("a comment", "another comment"))
[1] 1 2 3
but if the object is a call it prints it in an unusual format
> structure(quote(func(arg)), comment=c("a comment", "another comment"))
a comment
another comment
func(arg)
What is the rationale for the special treatment of calls?
Bill Dunlap
TIBCO Software
wdunlap tibco.com
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Re: [Rd] class() |--> c("matrix", "arrary") [was "head.matrix ..."]
> You can have your own rant about "user-defined binary operators being > over-used within the R community" without suggesting that my rant was > rude. I wasn't suggesting that you were rude. I was questioning a trend. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] calls with comment attribute
Bill,
Without being involved in that code at all, it seems that this could be
used to (re)create commented source code from R objects. That format seems
to correspond directly to a call in a .R file with two comments above it. A
bit weird there's no comment character there but I guess thats expected to
be in the values of the comment attribute?
Anyway, just a guess.
Best,
~G
On Tue, Nov 12, 2019 at 2:02 PM William Dunlap via R-devel <
r-devel@r-project.org> wrote:
> In general R doesn't print the "comment" attribute of an object
>> structure(1:3, comment=c("a comment", "another comment"))
>[1] 1 2 3
> but if the object is a call it prints it in an unusual format
>> structure(quote(func(arg)), comment=c("a comment", "another comment"))
>a comment
>another comment
>func(arg)
>
> What is the rationale for the special treatment of calls?
>
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
>
> [[alternative HTML version deleted]]
>
> __
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> https://stat.ethz.ch/mailman/listinfo/r-devel
>
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Re: [Rd] calls with comment attribute
On 12/11/2019 5:01 p.m., William Dunlap via R-devel wrote:
In general R doesn't print the "comment" attribute of an object
> structure(1:3, comment=c("a comment", "another comment"))
[1] 1 2 3
but if the object is a call it prints it in an unusual format
> structure(quote(func(arg)), comment=c("a comment", "another comment"))
a comment
another comment
func(arg)
What is the rationale for the special treatment of calls?
It was there in revision 2 of src/main/deparse.c in 1997. (For those
unfamiliar with R history: the current revision of R is 77405. That
particular file has been revised 248 times since rev 2.)
I suspect either nobody has noticed it before, or nobody had the nerve
to touch it.
Duncan Murdoch
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Re: [Rd] calls with comment attribute
I suspect that the parser used it to store comments, including the initial
"#", before R started using the srcref attribute. (S also stored comments
in the parse tree.)
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Tue, Nov 12, 2019 at 4:16 PM Duncan Murdoch
wrote:
> On 12/11/2019 5:01 p.m., William Dunlap via R-devel wrote:
> > In general R doesn't print the "comment" attribute of an object
> > > structure(1:3, comment=c("a comment", "another comment"))
> > [1] 1 2 3
> > but if the object is a call it prints it in an unusual format
> > > structure(quote(func(arg)), comment=c("a comment", "another
> comment"))
> > a comment
> > another comment
> > func(arg)
> >
> > What is the rationale for the special treatment of calls?
>
> It was there in revision 2 of src/main/deparse.c in 1997. (For those
> unfamiliar with R history: the current revision of R is 77405. That
> particular file has been revised 248 times since rev 2.)
>
> I suspect either nobody has noticed it before, or nobody had the nerve
> to touch it.
>
> Duncan Murdoch
>
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