Python syntax in Lisp and Scheme

[Andreas Rossberg]

Dirk Thierbach wrote:
> 
>>>you can use macros to do everything one could use HOFs for (if you
>>>really want).
> 
> I should have added: As long as it should execute at compile time, of
> course.
> 
>>Really? What about arbitrary recursion?
> 
> I don't see the problem. Maybe you have an example? I am sure the
> Lisp'ers here can come up with a macro solution for it.

I'm not terribly familiar with the details of Lisp macros but since 
recursion can easily lead to non-termination you certainly need tight 
restrictions on recursion among macros in order to ensure termination of 
macro substitution, don't you? Or at least some ad-hoc depth limitation.

	- Andreas

-- 
Andreas Rossberg, rossberg at ps.uni-sb.de

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