Re: Re: Sad newbie question about Data::Dumper and array references..

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Re: Re: Re: Sad newbie question about Data::Dumper and array references.. by merlyn (Sage) on Mar 23, 2001 at 16:38 UTC
You want `${$data}[0]` [download] as the exact equivalent of `$data->[0]` [download] Otherwise you've just committed the famous `@foo[3]` sin, which much literature speaks of. -- Randal L. Schwartz, Perl hacker	[reply] [d/l] [select]
Re: Re: Re: Sad newbie question about Data::Dumper and array references.. by busunsl (Vicar) on Mar 23, 2001 at 13:54 UTC
Nope I just find `print $data->[0]` looks more like dereferencing.	[reply] [d/l]
Re: Re: Re: Sad newbie question about Data::Dumper and array references.. by geektron (Curate) on Mar 23, 2001 at 13:52 UTC
not that i can think of. there might be others to correct me, though. `print @{$data}[0]` is too many bracey-curly-making-me-hit-shift characters. they perform the same tasks.	[reply] [d/l]
Re: Re: Re: Re: Sad newbie question about Data::Dumper and array references.. by tomhukins (Curate) on Mar 23, 2001 at 15:28 UTC
Actually, `@{$data}[0]` and `$data->[0]` perform slightly different tasks. The former creates an array containing one element (hence the @ at the start), whilst the latter creates a scalar (hence the $ at the start).	[reply] [d/l] [select]
Re: Re: Re: Re: Re: Sad newbie question about Data::Dumper and array references.. by greenFox (Vicar) on Mar 23, 2001 at 16:01 UTC
hmmmm, which means I should have written- `${$data}[0]` :-) -- my $chainsaw = 'Perl';	[reply] [d/l]
Re (tilly) 6: Sad newbie question about Data::Dumper and array references.. by tilly (Archbishop) on Mar 23, 2001 at 17:54 UTC
Re: Re: Re: Sad newbie question about Data::Dumper and array references.. by tadman (Prior) on Mar 24, 2001 at 00:42 UTC
It becomes apparent with more complex data structures, such as AoAoAoAoAoAoA's or HoHoHoHoHoHoHoH's, or any mutant variation thereof. `$data->[0]->[1]->[3]->[1]->[41]->[6]` over `${${${${${${$data}[0]}[1]}[3]}[1]}[41]}[6]` Unless you're really good at counting brackets, I'd stick with the C-style dereferencing via '->'	[reply] [d/l] [select]