On Sunday 20 January 2002 20:57, Larry Wall wrote:
> I expect PRE and POST could inherit automatically according to the
> usual rules of DbC, though how you implement that is something other
> people have thought about more than me. I think that LAST doesn't
> inherit. If you want to share common code, there's this neat Perl 6
> invention called "subroutines" you can use.
Funny you should say that. The question I hadn't asked yet:
Since these blocks are all closures now, will the different methods for
passing code blocks be interchangeable (or simplified)?
User code code can pass '{ ... }' if a sub's prototype wants a coderef, to
better match map and grep; sort can take a bare block or the name of a sub,
but none of the three can take a reference to a sub. Whereas this mostly
makes (made) sense, can code truly start being interchangable? Can I write
reusable transformers and filters for map and grep, simply passing in a ref
to the proper routine rather than the code block? How would this interact
(or react) with curried code blocks?
If this is a good first step, how far can it extend? Could I write a sub,
and pass a reference to it directly to LAST, for instance:
LAST $coderef;
or would I simply wrap it?
LAST {
&$coderef;
}
--
Bryan C. Warnock
[EMAIL PROTECTED]
