in vi (vim too?), in edit mode
:a,bs/^/# /g
inserts "# " at the beginning of lines a through b
On 6-May-12, at 7:41 PM, Joshua Wiley wrote:
Hi Ranjan,
To me, this is really a text editors job. Feature-rich editors make
it trivial, for example in Emacs, you can select a region (whatever
size you want) and M-x comment-region automatically comments every
line in that region. Similarly M-x uncomment-region will uncomment
every line. If you were doing this all the time, you could bind some
keyseries to do it for you. Vim has something similar, though I
forget the exact command.
A hack is:
if (FALSE) {
all the lines
you want
to be `commented'
}
which will leave them unevaluated at least. Both of these have been
suggested before on the list, which is probably why Brian Ripley
suggested searching the archives.
Cheers,
Josh
On Sun, May 6, 2012 at 7:31 PM, Ranjan Maitra <mai...@iastate.edu>
wrote:
Dear friends,
Is there an easy way of commenting out a block of R code after it has
been written? (I am aware that R-aware editors can insert #
line-by-line while it is being written, but I want to basically block
out chunks of R code in a few strokes.)
This question was asked on this mailing list some time ago: Professor
Ripley's answer was to try the following:
RSiteSearch(string="comment multiple lines")
Perfectly fine, but inexplicably, I got searches back (seven
pages) which do not seem to have any connection with what I am
looking
for.
Is there an easy way of doing this?
Many thanks and best wishes,
Ranjan
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--
Joshua Wiley
Ph.D. Student, Health Psychology
Programmer Analyst II, Statistical Consulting Group
University of California, Los Angeles
https://joshuawiley.com/
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-
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and provide commented, minimal, self-contained, reproducible code.
In science, 'fact' can only mean 'confirmed to such a degree that it
would be perverse
to withhold provisional assent.' I suppose that apples might start to
rise tomorrow,
but the possibility does not merit equal time in physics classrooms.
-- Stephen Jay Gould
Don McKenzie, Research Ecologist
Pacific Wildland Fire Sciences Lab
US Forest Service
phone: 206-732-7824
Affiliate Professor
School of Environmental and Forest Sciences
University of Washington
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
