Juerd wrote:
$y() = 7;
No, sorry, that looks to me as if $y is a reference to an lvalue sub,
not like any form of referencing of scalars.
I think it will come naturally to the C++ and Java folks. There the
accessor kind of functions is either mapped into the name get_y()
and set_y(value), or operator () is overloaded. In the latter idiom
assignment actually becomes $y(7). Which might be a bit far out for
Perlkind. But OTOH it looks like a function call...
This idiom looks better with scalar attributes of objects:
$obj.attr() = 7; # parser supports to drop the .()
and
$obj.attr(7); # beware, attr becomes 7 if the class of $obj works as such
And it nicely gives:
$y = \$obj.attr;
$y() = 7; # dereffed assignment
$y = 13; # detaches from $obj.attr
say $obj.attr; # prints 7
I'm not sure but in Perl5 the equivalent to the second line above is
$y-> = 7; # postfix -> is now spelled ()
isn't it?
--
TSa (Thomas Sandlaß)
