On Jul 5, 2013, at 18:59 , William Dunlap wrote:
>> Is there any reason right-assign with "->" still exists? How much
>> code on CRAN uses it, and how trivially could it be excised?
>
> I use '->' a lot when doing interactive work. I often first run a command
> to see its printed output then decide that I had better save its value.
> The up-arrow key gives me the previous command line with the cursor placed at
> the
> end of the line so adding '-> z' at the end of the line is convenient.
> (Not using the up-arrow key and doing 'z <- .Last.value' also works, but
> I don't like its context sensitivity.)
But up-arrow, ctrl-A then "z <-" is not much less convenient, is it?
I have used in with multi-line input, occasionally, though. As in
replicate(10000, {
ysim <- rbinom(length(p), n, p)
glm(cbind(ysim, n - ysim) ~ x, binomial)$deviance
})
... and then you realize that you probably don't want to look at 10000
simulated deviances and add "-> simDev".
>
> I never use '->' when writing code in a file, so you would have to search
> my .Rhistory files, not my *.R files, for evidence of its usefulness to me.
>
> Bill Dunlap
> Spotfire, TIBCO Software
> wdunlap tibco.com
>
>
>> -----Original Message-----
>> From: r-devel-boun...@r-project.org [mailto:r-devel-boun...@r-project.org]
>> On Behalf
>> Of Barry Rowlingson
>> Sent: Friday, July 05, 2013 9:29 AM
>> To: Duncan Murdoch
>> Cc: R-devel
>> Subject: Re: [Rd] should the text for RIGHT_ASSIGN be -> in getParseData()?
>>
>> On Fri, Jul 5, 2013 at 12:57 PM, Duncan Murdoch
>> <murdoch.dun...@gmail.com> wrote:
>>
>>> R itself doesn't make use of the text column, it's for display of code
>>> by highlighters etc. So if anyone does assume text is a function name,
>>> it's their bug, not ours. In fact, the bug is already there, because
>>> there is actually one other example which was being parsed properly,
>>> "**" is translated to "^". There's no `**` function, but 2**3 works.
>>
>> Is there any reason right-assign with "->" still exists? How much
>> code on CRAN uses it, and how trivially could it be excised? Can we
>> also have 'up assign' and "down assign" so I can do:
>>
>>> 3
>>> x -^
>>> x -v
>>> 4
>>
>> - they make just as much sense.
>>
>> Okay, lets see all the edge cases.....
>>
>> Barry
>>
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>
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--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd....@cbs.dk Priv: pda...@gmail.com
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