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Re: Functions and arrays [message #7602 is a reply to message #7601]

Wed, 04 December 1996 00:00

gunter
Messages: 13
Registered: October 1996

Junior Member

William Thompson (thompson@orpheus.nascom.nasa.gov) wrote:
[see previous post for details]

I find this behaviour to be irresponsible on the part of IDL. To really
stress the point, do the following. (There is no new info just a better
illustration of the problem for those new to IDL)

Insert a STOP command in the function test1, after assigning the values to the
test2 array:

: function test1, i
: test2 = [1,3,7]
STOP
: a = test2(i)
: return, a
: end

Then compile test2 first, then test1 and run test1 via
print, test1(0)

When you get back the command prompt, type HELP and you'll see that there is
an array named test2 and lower you will see that there is a function named
test2.

(idl)% print, test1(0)
% Stop encountered: TEST1 3 /TEST1.pro
(idl)% help
% At TEST1 3 /TEST1.pro
% $MAIN$
Code area used: 100% (200/200), Symbol area used: 21% (40/184)
# local variables: 3, # parameters: 1
A UNDEFINED = <Undefined>
TEST2 INT = Array(3)
I INT = 0
Compiled Procedures:
$MAIN$ LOADCT
Compiled Functions:
TEST1 TEST2

Now, type
print, test2
and you'll see the values in the array. If you then type
print, test2(0)
You will get the value of the function test2 (-1 in this case).

Again, there's nothing new that previous posts haven't told us, but I find the
behaviour rather silly.
--
david gunter
http://www.mcs.anl.gov/people/gunter/
-------------------------------------
"When you are a Bear of Very Little Brain, and you Think of Things, you find
sometimes that a Thing which seemed very Thingish inside you is quite
different when it gets out into the open and has other people looking at it."
- A.A. Milne, "The House At Pooh Corner"

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[Message index]

		Re: Functions and arrays By: David R. Klassen on Sat, 07 December 1996 00:00
		Re: Functions and arrays By: Tim Patterson on Fri, 06 December 1996 00:00
		Re: Functions and arrays By: haimov on Fri, 06 December 1996 00:00
		Re: Functions and arrays By: steinhh on Fri, 06 December 1996 00:00
		Re: Functions and arrays By: greenwoodde on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: William Clodius on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: thompson on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: Mirko Vukovic on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: brian.jackel on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: Anonymous on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: llobet on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: Peter Mason on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: thompson on Wed, 04 December 1996 00:00
		Re: Functions and arrays By: steinhh on Wed, 04 December 1996 00:00
		Re: Functions and arrays By: gunter on Wed, 04 December 1996 00:00
		Re: Functions and arrays By: rigby on Wed, 04 December 1996 00:00

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