On Wed, May 27, 2015 at 3:46 PM, Peter Danenberg <[email protected]> wrote:
> Quoth Peter Bex on Boomtime, the 1st of Confusion: > > If "or" were a simple procedure, it would first evaluate all its > > arguments and then call the procedure. > > This is also known as applicative vs. normal order; see e.g.: > > https://mitpress.mit.edu/sicp/full-text/sicp/book/node85.html > > Procedures are applicative; macros are normal. > I think that chapter needs to be studied carefully and in context for its relevance to be appreciated. I trust that it *is* relevant (and just in case anyone doesn't know, this book (Structure and Interpretation of Computer Programs) is one of the classics in the field, and I think well worth studying for anyone who has time and wants to *really* understand Scheme ... though I haven't done it yet), but I'm not sure it works as a quick explanation. -- Matt Gushee
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