[ruby-talk:5388] Re: Allowing *ary's in the middle of a camma separated list

"Akinori MUSHA" <[e-mail]> wrote:
> At Tue, 10 Oct 2000 14:24:28 +0900,
> Yukihiro Matsumoto <[e-mail]> wrote:
> > How about this?
> > 
> >   system 'rcsdiff', *(options+["-r#{revold}", "-r#{revnew}", "#{root}/#{file},v"])
> 
> Well, yes, that's supposed to work, but I simply do not feel it's as
> pretty as other parts of Ruby.  I mean, I just couldn't explain why
> "proc(a, b, *c)" is allowed and "proc(a, *b, c)" or "proc(a, *b, *c)"
> is not, considering Ruby's consistent nature.
> 
> Is it hard to implement that, or does it decrease Ruby's cleanness in
> any sense? (I'm not pushing so hard, but just curious :)

I ran into this problem last week, and my workaround was to change a little 
what I was doing:

        def to_s
            border = '+---' * @width + "+\n"
            rowfmt = "| %-2s" * @width + "|\n" + border
            string = border.dup
            @board.each {|row|
                string.concat format(rowfmt, *row)
            }
            string
        end

Previously, I had the non-working (but, I guess, maybe cleaner) code as 
follows.  I'm going by memory because for some reason I didn't use CVS until 
I was late in the game of writing this ;):

        def to_s   
            border = '+---' * @width + "+\n"
            string = border.dup
            @board.each {|row|
                string.concat format("| %-2s" * @width + "|\n%s", *row, border)
            }
            string
        end

If it's not too much work, I'd also appreciate this ability.

--
 Brian Fundakowski Feldman           \  FreeBSD: The Power to Serve!  /
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