Re: assign to magic name-of-function variable instead of "return"

David L. Nicol wrote:
> sub subname(proto){
>
> # in here, the bareword "subname" is a magic
> # alias for the lvalue this routine is getting
> # assigned to, if any.
>
> }
>
> We could even define a new line noise variable which could hold the
> results of the last name-of-function subroutine that was not invoked
> as an rvalue (I nominate $__ ); make such an invokation a warning-level
> offense; and make $__ visibility/localization compatible with recursion.


I don't really see what this buys us. First, `return' already handles it,
and it finishes sub execution. How would it be handled with that? `foo = 42;
last;'? I think `return 42;' is better... And `return' handles scalar/list
context, mainly because it isn't a special variable, it is a statement. IMO,
`return' is perfect for the job, since it combines the familiarity of
passing a list as parameter to a statement, what is done in all practically
all Perl statements, and has no problem with context to return a scalar or a
list from a sub.

I really think that changing a familiar thing as `return', which is familiar
even to programmers of other languages, to a cryptic thing as $__/@__, just
to save the one value copy, isn't any good at all.

If optimization is _so_ needed, I think the parser/compiler should identify
those situations and optimize them in subs that use the same variable always
in `return' and bind it to the result value slot in the stack, or anything
like that, leaving the same `return' interface to the user.

- Branden

• assign to magic name-of-function variable instead of "return" by David L. Nicol
• Re: assign to magic name-of-function variable instead of "return" by Branden
• Re: assign to magic name-of-function variable instead of "return" by James Mastros
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by abigail
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by Damian Conway
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by Bart Lateur
• Re: assign to magic name-of-function variable instead of "return" by Johan Vromans
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• more POST recitation by David L. Nicol
• Re: more POST recitation by Ken Fox
• Re: assign to magic name-of-function variable instead of "return" by Ariel Scolnicov
• Re: assign to magic name-of-function variable instead of "return" by Damian Conway
• Re: assign to magic name-of-function variable instead of "return" by Jarkko Hietaniemi
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by David L. Nicol
• Re: assign to magic name-of-function variable instead of "return" by Damian Conway
• Re: assign to magic name-of-function variable instead of "return" by Edward Peschko
• Re: assign to magic name-of-function variable instead of "return" by Johan Vromans
• Re: assign to magic name-of-function variable instead of "return" by abigail
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by Tony Olekshy
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of"return" by Peter Scott
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of"return" by Peter Scott
• Re: assign to magic name-of-function variable instead of"return" by David L. Nicol
• Re: assign to magic name-of-function variable instead of"return" by Peter Scott
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by David L. Nicol
• Re: assign to magic name-of-function variable instead of "return" by Nicholas Clark
• POST blocks (like END, but in a sub or sub-like scope) by David L. Nicol
• Re: POST blocks (like END, but in a sub or sub-like scope) by John Porter
• Re: POST blocks (like END, but in a sub or sub-like scope) by Nicholas Clark
• Re: POST blocks (like END, but in a sub or sub-like scope) by Bart Lateur
• Re: POST blocks (like END, but in a sub or sub-like scope) by John Porter
• Re: POST blocks (like END, but in a sub or sub-like scope) by David L. Nicol
• Re: POST blocks (like END, but in a sub or sub-like scope) by Nicholas Clark
• Re: assign to magic name-of-function variable instead of "return" by Glenn Linderman
• Re: assign to magic name-of-function variable instead of "return" by Glenn Linderman
• Re: assign to magic name-of-function variable instead of "return" by Glenn Linderman
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by Branden
• Re: assign to magic name-of-function variable instead of "return" by Simon Cozens
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by Simon Cozens
• Re: assign to magic name-of-function variable instead of "return" by Branden
• Re: assign to magic name-of-function variable instead of "return" by Branden
• Re: assign to magic name-of-function variable instead of "return" by Branden
• Re: assign to magic name-of-function variable instead of "return" by abigail
• Re: assign to magic name-of-function variable instead of "return" by David L. Nicol
• Re: assign to magic name-of-function variable instead of "return" by Branden
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of"return" by Peter Scott
• Re: assign to magic name-of-function variable instead of "return" by David L. Nicol
• Re: assign to magic name-of-function variable instead of "return" by James Mastros
• Re: assign to magic name-of-function variable instead of "return" by Johan Vromans
• Re: assign to magic name-of-function variable instead of "return" by James Mastros
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by Bart Lateur
• Re: assign to magic name-of-function variable instead of "return" by James Mastros
• Re: assign to magic name-of-function variable instead of "return" by James Mastros
• Re: assign to magic name-of-function variable instead of "return" by abigail
• Re: assign to magic name-of-function variable instead of "return" by James Mastros
• Re: assign to magic name-of-function variable instead of "return" by Branden
• Re: a name for the currently executing sub by Dan Sugalski
• Re: a name for the currently executing sub by David L. Nicol
• Re: a name for the currently executing sub by Dan Sugalski
• Re: a name for the currently executing sub by Nicholas Clark
• Re: a name for the currently executing sub by Peter Scott
• a name for the currently executing sub by David L. Nicol
• Re: assign to magic name-of-function variable instead of "return" by John Porter
• Re: assign to magic name-of-function variable instead of "return" by David L. Nicol
• Re: assign to magic name-of-function variable instead of "return" by James Mastros
• Re: assign to magic name-of-function variable instead of "return" by David L. Nicol