Re: RFC 118 (v1) lvalue subs: parameters, explicit assignment, and wantarray() changes

Andy Wardley wrote:
>
> I'm inclined to say that assignments of the form:
> 
>     $foo->bar(@baz) = @boz;
> 
> Are allowed, but just plain stupid. It's the same as:
> 
>     $foo->bar(@baz, @boz)
> 
> and you're right, Perl can't tell the lvalues and rvalues apart.  So
> don't do that. 

I hate to add a "me too" but I think this is right on. I also think that
Nat's proposal and several other discussions overlook some stuff about
lvalue subs. Most of the places I've seen them used really well is if
they walk and talk like other forms:

   $cgi->param($var, @val);      # traditional
   $cgi->param($var) = @val;     # lvalue, but same thing

The second one, then, just makes it more obvious what's going on. But it
shouldn't change the behavior of the sub. In fact, these two should
*both* be valid options for setting $var. Then the programmer can choose
their preferred style.

-Nate