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Re: Finding if a structure tag name is defined? [message #36696 is a reply to message #36695]

Tue, 14 October 2003 14:53

wmconnolley
Messages: 106
Registered: November 2000

Senior Member

David Fanning <david@dfanning.com> wrote:
> Reimar Bauer writes:
>> I often use is_tag to determine if a tag is in a structure

OK, thanks, I'll give it a go.

> But, alas, you are still going to have to call IS_TAG
> as many times as you have letters in your keyword, if
> you hope to fish it out unambiguously. :-(

Hmm, so, isn't that a flaw in IDL? Taking on board your
well-reasonsed critique of (over)using _extra, it still seems
quite reasonable to expect to be able to find if a given tag
exists in a given structure, via a mechanism as simple as
using n_elements to see if a given variable exist. IDL seems
to make this simple task harder than it should be.

(and anyway, looking at the pro, it only needs calling once).

-W.

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William M Connolley | wmc@bas.ac.uk | http://www.antarctica.ac.uk/met/wmc/
Climate Modeller, British Antarctic Survey | Disclaimer: I speak for myself
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[Message index]

		Re: Finding if a structure tag name is defined? By: mvukovic on Wed, 15 October 2003 11:51
		Re: Finding if a structure tag name is defined? By: Mark Hadfield on Tue, 14 October 2003 19:35
		Re: Finding if a structure tag name is defined? By: David Fanning on Tue, 14 October 2003 15:19
		Re: Finding if a structure tag name is defined? By: wmconnolley on Tue, 14 October 2003 14:53
		Re: Finding if a structure tag name is defined? By: David Fanning on Tue, 14 October 2003 09:55
		Re: Finding if a structure tag name is defined? By: R.Bauer on Tue, 14 October 2003 09:34
		Re: Finding if a structure tag name is defined? By: David Fanning on Tue, 14 October 2003 07:32

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