Hi I'm trying the use references to functions but can't seem to get it right. I've done: 
$a = sub {return @_[0]}; (yes I know....)
$b = sub {return @_[0]+1};

.... some code .....
if (something)
   $i = $a;
else
   $i = $b;

&lala ($i);

sub lala{
   my $i = $_[0];
   $res = &{$i}($number) ;
   #have also tried $res = $i->($number) with the same result
}

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It gives me a undefined subroutine &main:: called at ... error. Anybody can give me some advice?

In reply to using reference to subroutine by kotoko

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