I'm watching Steve Baker's Perl Attributes presentation in Phoenix. He mentions the predefined attribute 'lvalue', which is an alternative to passing an assignment value as a function argument. In a package definition .... 

sub value : lvalue {
   my $self = shift;
   return $self->{value}
}

....


$obj->value() = 42;

# compare with boring assignment ...

$obj->value(42)

[download]

Is lvalue useful? are people using it? or is it just a dud?

As Occam said: Entia non sunt multiplicanda praeter necessitatem.

In reply to Is ": lvalue" attribute usefull or something to avoid? by TomDLux

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