Re: XML::Twig and subchildren

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Re^2: XML::Twig and subchildren by jfroebe (Parson) on Aug 10, 2004 at 20:45 UTC
Unfortunately, $elt->first_child() doesn't return an element object... so `my $RELATIONSHIP = $elt->first_child('LINK_CONFIG')->first_child('RELATIONSHIP')->text;` will fail on compilation with "Can't call method "first_child" on an undefined value". Jason No one has seen what you have seen, and until that happens, we're all going to think that you're nuts. - Jack O'Neil, Stargate SG-1	[reply] [d/l]
Re^3: XML::Twig and subchildren by mirod (Canon) on Aug 10, 2004 at 20:54 UTC
`$elt->first_child('LINK_CONFIG')` returns an element, unless there is no `LINK_CONFIG` child. So if the code fails it will be at runtime, not compilation. If this is likely to happen then you have to process this case: `if( my $link_config= $elt->first_child('LINK_CONFIG')) { my $relationship= $link_config->first_child('RELATIONSHIP')->text; + # ... } else { warn "no LINK_CONFIG found\n"; # or any other processing necessary }` [download]	[reply] [d/l]
Re^4: XML::Twig and subchildren by jfroebe (Parson) on Aug 10, 2004 at 21:03 UTC
Something so obvious! Must need more caffeine! Thanks! No one has seen what you have seen, and until that happens, we're all going to think that you're nuts. - Jack O'Neil, Stargate SG-1	[reply]