darcs patch: add withFile and withBinaryFile (#966)

[Jason Dagit]

On 10/26/06, Ross Paterson <ross at soi.city.ac.uk> wrote:
> On Wed, Oct 25, 2006 at 11:16:25PM -0400, Samuel Bronson wrote:
> > On 10/25/06, Ross Paterson <ross at soi.city.ac.uk> wrote:
> > >Thu Oct 26 01:10:44 BST 2006  Ross Paterson <ross at soi.city.ac.uk>
> > >  * add withFile and withBinaryFile (#966)
> > >
> > >  To be discussed on the libraries list until Thursday 9th November 2006.
> > >
> > >  These functions are fairly small, but they're worth naming because they
> > >  wrap up a pattern that should be encouraged.
> >
> > I think this bikeshed would be nice in red. (Or: why would it take two
> > weeks to discuss this?)
>
> OK, I should have phrased that as "Please make any comments on the
> libraries list by <date>" (because that's when I'm committing the patch
> if I don't hear any objections).  It's an experiment with the new process.
>
> So do you have a comment?

My only comment is that this is a Good Thing(tm).  Back when I did a
lot of lisp I remember someone telling me, "Figure out the correct way
to open a file, do something with it, catch any exceptions, clean up
and pass on any exceptions.  Then, once you know how, write a macro
and never do it by hand again!"  (Common Lisp does already have a
macro just like this, but the point remains.)

Thanks!
Jason