From: christoph.kie...@snb.ch
> What is the precise difference between the two ways of generating an
> inside-out-object?
>
> 1/
> my $node = bless \do { my $anonymous }, ref($class) || $class;
>
>
> 2/
> my $a;
> my $node = bless \$a, ref($class) || $class;
>
> In other words, why is it suggested in most books, web to have an
> /anonymous/ scalar?
If you do not touch the $a anywhere in the rest of the enclosing
block then the two are equivalent. The do{} trick is there just to
create a block as small as possible to ensure the variable is not
used.
I would actually find this easier to read:
my $node = do {
my $anon;
bless \$anon, $class;
};
I don't really like the \do.
Jenda
===== je...@krynicky.cz === http://Jenda.Krynicky.cz =====
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