On Aug 13, 2009, at 5:30 PM, Bradbev wrote:
>>> More complex "reader" macros could be (infix x + y + z / 3).
>>
>> I think you can already do that with regular macros.
>
> I don't think so. Macros are invoked after the read stage but before
> evaluation of arguments. This kind of macro would be invoked without
> the text going through any kind of reader expansion.
Isn't reader expansion exactly what you don't want?
user> (defmacro infix [& args]
`(quote ~args))
#'user/infix
user> (infix 3 + 4 * 7)
(3 + 4 * 7)
I don't understand what's stopping anyone from implementing the body
of that macro to make it actually implement infix arithmetic.
—
Daniel Lyons
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