On Tue, Dec 07, 2021 at 06:02:23PM +0000, Paul "LeoNerd" Evans wrote: > I think a lot of that isn't even necessary though. A variant of my > no-snails branch which I haven't yet committed or pushed, very slightly > relaxes the rules and allows a use of @_ as an rvalue in scalar > context, purely to allow the code to determine the argument count. > Potentially we could even still permit the use of @_ but only in > known-{scalar rvalue} contexts (such as the code above) allowing it to > continue to run unmodified from its current form. Already there is lots > of real code out in the wild (on CPAN and elsewhere) using @_ in > signatured subs in this way, and I think it would be nice not to break > them. This was my view too, for this reason. It's the wrong design if we started from a clean sheet, but we aren't. Effectively we're saying that (for a while yet) we'll permit `scalar @_` as a strange special way to write builtin::argc (or something like that, if it ever comes to exist) But discourage it for new code. And at some point deprecate it. Nicholas ClarkThread Previous | Thread Next