Le jeudi 18 mars 2010 à 15:49 -0400, Duncan Murdoch a écrit :
> 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.
Quite right ! And I know I'm falling in that trap every time I don't
code in C for more than a few weeks (it has been three months, now...).
That's probably because this "end-of-statement" role desn't strike my
psyche as important enough... (And maybe because Lisp and, to a lesser
extend, Pascal were my computer "mother tongues", APL a serious crush
and Fortran something of an "(almost)-read-only" acquaintance).
Nice thinko...
Emmanuel Charpentier
Still recovering...
>
> 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
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> [[alternative HTML version deleted]]
> >>>
> >>> ______________________________________________
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> >>>
> >
> > ______________________________________________
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>
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