comp.lang.idl-pvwave archive: archive » Test if variable is a string

Home » Public Forums » archive » Test if variable is a string

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Test if variable is a string [message #34025 is a reply to message #33913]

Sat, 15 February 2003 05:28

R.Bauer
Messages: 1424
Registered: November 1998

Senior Member

Carsten Dominik wrote:
> Hello,
>
> I must be blind: How do I test for the type of the object contained
> in a variable? I am writing a procedure and want to allow one of the
> arguments to be either a string or a number - but the program must of
> course find out which it is?
>
> This is my main problem with IDL: I am *never* able to correctly guess
> the name of a function for a particular purpose.
>
> So what is the magic word for determining the type of a variable?
> Thanks.
>
> - Carsten
>
>

Dear Carsten,

a bit late but I believe the opposite check is better to test if the
string is a regular number because if you test only about types it could
happen that's an exponent number is defined as string.

I often use a routine named string_is_number

you'll find it here:

http://www.fz-juelich.de/icg/icg-i/idl_icglib/idl_source/idl _html/dbase/download/string_is_number.tar.gz

regards

reimar

--
Reimar Bauer

Institut fuer Stratosphaerische Chemie (ICG-I)
Forschungszentrum Juelich
email: R.Bauer@fz-juelich.de
------------------------------------------------------------ -------
a IDL library at ForschungsZentrum Juelich
http://www.fz-juelich.de/icg/icg-i/idl_icglib/idl_lib_intro. html
============================================================ =======

Report message to a moderator

[Message index]

		Test if variable is a string By: Carsten Dominik on Tue, 04 February 2003 01:56
		Re: Test if variable is a string By: R.Bauer on Sat, 15 February 2003 05:28
		Re: Test if variable is a string By: MKatz843 on Sun, 16 February 2003 12:58
		Re: Test if variable is a string By: R.Bauer on Mon, 17 February 2003 02:36

Previous Topic:	Re: Printing line number of an error
Next Topic:	UNIQ without SORT

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 13:26:28 PDT 2025

Total time taken to generate the page: 0.72509 seconds