Re: Re: Passing Indirect as Reference

But couldn't you do just

my $parse_it = HTML::TokeParser->new( \ ${$self->{'HTML'} } );
[download]

As far as my limited understanding of references goes, you force the $self part to be interpreted as a scalar (string), and pass a reference to that string.

If I'm wrong here (correct me if not ;-), you also could do

my $parse_it = HTML::TokeParser->new( \ "$self->{HTML}" );
[download]

as the quotes are not necessary, and the \ should give a reference to the resulting string.

Hope this helps,

Jeroen
I was dreaming of guitarnotes that would irritate an executive kind of guy (FZ)

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Re: Re: Re: Passing Indirect as Reference by chipmunk (Parson) on Jan 10, 2001 at 19:32 UTC
Quote: `my $parse_it = HTML::TokeParser->new( \ ${$self->{'HTML'} } );` That code dereferences `$self->{'HTML'}` as a scalar reference; if `$self->{'HTML'}` were already a scalar reference, this whole exercise would be unnecessary. So that won't work. Quote: `my $parse_it = HTML::TokeParser->new( \ "$self->{HTML}" );` That works, passing a reference to a copy of `$self->{HTML}`, instead of to `$self->{HTML}` itself. That has the (probably not significant) disadvantage of allocating memory for a duplicate of `$self->{HTML}`, but the advantage of not having to worry about HTML::TokeParser changing the value of `$self->{HTML}` via the reference. That's a good suggestion.	[reply] [d/l] [select]
Re: Re: Re: Passing Indirect as Reference by ichimunki (Priest) on Jan 10, 2001 at 18:10 UTC
thanks to both of you. FYI, looking at jeroenes' last example I tried `my $parse_it = HTML::TokeParser->new( \ $self->{HTML} );` [download] which worked just fine without the double quotes around the construct. (I use the quoted hash keys by habit and early example, I suppose I can drop that habit soon. It doesn't affect hash keys with spaces in them?)	[reply] [d/l]
Re: Re: Re: Re: Passing Indirect as Reference by jeroenes (Priest) on Jan 10, 2001 at 18:29 UTC
I tried it, but perl appears to interpret the words as a method/package pair. So, you'll have to quote if you use spaces in keys. Jeroen I was dreaming of guitarnotes that would irritate an executive kind of guy (FZ)	[reply]
Re: Re: Re: Re: Re: Passing Indirect as Reference by ichimunki (Priest) on Jan 10, 2001 at 18:31 UTC
I knew there was a reason I was keeping this habit around. I had read somewhere that such a thing would happen, but when I tried to verify this morning via the Camel3 and perldoc I could not. Thanks.	[reply]