Re: idl5.3 create_struct()

[Craig Markwardt <craigmnet(at)cow.physics.wisc.edu>]

Liam Gumley <Liam.Gumley@ssec.wisc.edu> writes:
> "R.Bauer" wrote:
> > I was very surprised and afraid this morning about the definition
> > changes of possible signs on tagname definitions.
> > 
> > The only non_alphanumeric signs which are allowed in the new version is
> > '$' and '_'.
> > The '!' sign is only defined for the first place.
> > 
> > a=create_struct('test@core',1)
> > % CREATE_STRUCT: Illegal tag name: test@core.
> > % Execution halted at:  $MAIN$
> > 
> > I have had no information about such changes I don't found any hint's in
> > the what's new topics.
> 
> I noticed the same thing in the IDL 5.3 beta release in September 1999.
> RSI technical support told me this was a *bug* in IDL prior to version
> 5.3. According to the IDL documentation, structure tag names must
> conform to the same rules as variable names. As far back as IDL 5.1,
> this was documented in 'Building IDL Applications/Structures/Creating
> and Defining Structures':

It's pretty funny too.  Try these with an older version of IDL:

a = create_struct('(1)', 1)
a = create_struct('1',   1)
a = create_struct('.',   1)

That's just not right.  Pretty cool though.

Craig

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Craig B. Markwardt, Ph.D.         EMAIL:    craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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