[plt-scheme] mreverse!

You might also want to read HtDP's explanation of mutation.
(http://www.htdp.org/).

Robby

On Sat, Jan 24, 2009 at 3:23 PM, David Van Horn <dvanhorn at ccs.neu.edu> wrote:
> praimon wrote:
>>
>> Okay, so I definitely don't understand the point of mreverse!
>
> (mreverse ls) creates as many cons cells as are in ls.
> (mreverse! ls) creates no cons cells.
>
> David
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