On 18/03/2010 3:10 PM, Emmanuel Charpentier wrote:
An old (Lisp ? C ?) quote, whose author escapes me now, was :
"syntactic sugar causes cancer of the semicolon"
.. but nowadays semicolons are rarely used in "real-life" R.
Emmanuel Charpentier
PS and, BTW, neither C nor Lisp have much use for semicolons... Was that
Pascal (or one of its spawns) ?
Not sure what you mean about C: it's a statement terminator there.
Pascal also uses it, but as a statement separator.
Duncan Murdoch
Le jeudi 18 mars 2010 à 12:00 +0000, Prof Brian Ripley a écrit :
-> is usually only used when you suddenly remember you wanted to keep
result of a computation, especially in the days before command-line
editors were universal.
fn(a,b) ... oh I'd better keep that ... -> z
On Thu, 18 Mar 2010, Dan Kelley wrote:
I have never used -> but I noticed at
http://github.com/jiho/r-utils/blob/master/beamer_colors.R
that some people do.
In fact, the above-named code has a sort of elegance about it
(except
for the use of "=" for assignment...). To my eye, -> calls to mind a type of assignment that is meant to stand out. For example, perhaps it would make sense to use -> to assign to things that are not expected to vary through the rest of the code block.
Q1: is there a convention, informal or otherwise, on when to use the ->
operator?
Q2: if there is no convention, but if people think a convention might help,
what would that convention be?
Dan Kelley, PhD
Professor and Graduate Coordinator
Dept. Oceanography, Dalhousie University, Halifax NS B3H 4J1
kelley....@gmail.com (1-minute path on US server) or dan.kel...@dal.ca (2-hour
path on Cdn server)
Phone 902 494 1694; Fax 902 494 3877
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