From: Rick DeNatale <rick.denatale@...>
Date: 2006-09-04T12:06:42+09:00
Subject: Re: A little idiom I like

On 9/3/06, M. Edward (Ed) Borasky <znmeb@cesmail.net> wrote:
> Rick DeNatale wrote:
> > On 9/1/06, Hal Fulton <hal9000@hypermetrics.com> wrote:
> >> Here's a little something I like. YMMV.
> >>
> >> Hal
> >>
> >>
> >>    require 'pathname'
> >>
> >>    class Pathname
> >>      alias / +
> >>    end
> >>
> >>    home = Pathname.new("/home/hal")
> >>    proj = home/"projects"
> >>    foo  = home/"projects/foobar"
> >>
> >>
> >
> > Those poor Windows guys. <G>
> >
> > irb(main):017:0> class Pathname
> > irb(main):018:1>   alias \ +
> > irb(main):019:1* end
> > SyntaxError: compile error
> > (irb):18: parse error, unexpected $undefined.
> >  alias \ +
> >         ^
> >        from (irb):19
> >        from :0
> > irb(main):020:0>
> >
>
> There's a workaround, right? Some combination of other quotes and double
> backslashes? The R people get around it by using forward slashes
> internally and only converting to backslashes when going out to a
> Windows call that needs them. Even so, there was one thing I never did
> figure out how to do in R, and ended up starting R up in the right
> directory at the beginning of the session. :)

No easily, even if you can figure out how to define a method named \
or "\\" it's going to be messy sending it.

-- 
Rick DeNatale

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