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Re: Test if variable is a string [message #33885]

Tue, 04 February 2003 19:10

Richard French
Messages: 173
Registered: December 2000

Senior Member

"David Fanning" <david@dfanning.com> wrote:

>
> I just point out that in code you want to be able
> to read and understand later,....

Gee, who would want to do that?

Does anyone here remember the glory days of FORTH?
A true 'write-only' language. It's like reading raw
Postscript and trying to remember what is on the stack
And how it got there.

Which makes me think about all of the other dead programming languages out
there - does anyone still use Pascal? I seem to recall that the original Mac
code was written in Pascal - about as different a language from IDL as I can
think of.

Dick French

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Re: Test if variable is a string [message #33903 is a reply to message #33885]

Tue, 04 February 2003 08:21

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Kenneth P. Bowman (kpb@null.com) writes:

> type = SIZE(variable, /TYPE)

I just point out that in code you want to be able
to read and understand later, that the TNAME keyword
is also useful. :-)

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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Re: Test if variable is a string [message #33904 is a reply to message #33903]

Tue, 04 February 2003 07:23

Carsten Dominik
Messages: 45
Registered: February 1998

Member

>>>> > "KPB" == Kenneth P Bowman <kpb@null.com> writes:

KPB> In article <qzu65s0xtbv.fsf@sand.science.uva.nl>,
KPB> Carsten Dominik <dominik@_DROP_THIS_science.uva.nl> wrote:

>> So what is the magic word for determining the type of a variable?

KPB> type = SIZE(variable, /TYPE)

KPB> What, that isn't obvious? ;-)

Exactly! :-) Thanks

- Carsten

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Re: Test if variable is a string [message #33910 is a reply to message #33904]

Tue, 04 February 2003 05:23

Kenneth P. Bowman
Messages: 585
Registered: May 2000

Senior Member

In article <qzu65s0xtbv.fsf@sand.science.uva.nl>,
Carsten Dominik <dominik@_DROP_THIS_science.uva.nl> wrote:

> So what is the magic word for determining the type of a variable?

type = SIZE(variable, /TYPE)

What, that isn't obvious? ;-)

Ken Bowman

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