On Fri, Sep 17, 2010 at 11:52 AM, Robby Findler
ro...@eecs.northwestern.edu wrote:
On Fri, Sep 17, 2010 at 11:50 AM, Casey Klein
clkl...@eecs.northwestern.edu wrote:
On Fri, Sep 17, 2010 at 11:39 AM, ro...@racket-lang.org wrote:
robby has updated `master' from c6fc7137ee to ce211ac364.
http://git.racket-lang.org/plt/c6fc7137ee..ce211ac364
=[ 1 Commits ]==
Directory summary:
10.1% collects/redex/private/
83.2% collects/redex/tests/bmps-macosx/
6.6% collects/redex/tests/
~~
ce211ac Robby Findler ro...@racket-lang.org 2010-09-17 11:39
:
| adjusted metafunction application rendering so that ellipses do not
| get commas put in front of them
:
FWIW, if I were typesetting this example by hand, I would have done it
the old way
rdups[| x_1, x_2, ..., x_1, x_3, ... |]
not the new way
rdups[| x_1, x_2 ..., x_1, x_3 ... |]
but maybe I'm alone in that preference.
I had thought that for a while, but some examples I'm working with
today get really confusing when you do that and just seem ugly. The
ellipses really isn't a separate item in the argument list; it is an
operator on the thing that comes before and the lack of a paren
emphasizes this properly.
IMO.
In that case, maybe there should be a parameter? (I'll be the one to
add it if you want.)
This rendering seems like a departure from convention. The first two
books I pulled off my shelf (_Semantics of Programming Languages_ and
_Invitation to Discrete Mathematics_) do it the old way.
_
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