Re: scope of variable in NCL

Hi Saji,

In this case you are right that there does seem to be a problem. I
will investigate. I am going to be on vacation for a few days so I
will not have an answer until later next week. But this does need to
be addressed.
  -dave

On Oct 15, 2009, at 11:03 PM, Saji N Hameed wrote:

> Even declaring "a" as local does not seem to work :(
> ncl 1> function test(a,b,c)
> ncl 2> local a,b,c
> ncl 3> begin
> ncl 4> a=-999
> ncl 5> return(1)
> ncl 6> end
> ncl 7> print(""+test(a,1,2))
> (0) 1
> ncl 8> print(""+a)
> (0) -999
>
> * Saji N Hameed <saji@apcc21.net> [2009-10-16 13:59:15 +0900]:
>
>> Dear NCL Developers,
>>
>> I suppose that the following should not happen. Isn't it a bug?
>> We are told that variables inside a function have local scope, and
>> this unusual feature can lead to a lot of headaches. Any solutions,
>> other than "local a" or using another variable name than "a"
>>
>> Copyright (C) 1995-2009 - All Rights Reserved
>> University Corporation for Atmospheric Research
>> NCAR Command Language Version 5.1.1
>> The use of this software is governed by a License Agreement.
>> See http://www.ncl.ucar.edu/ for more details.
>> ncl 0> a=5
>> ncl 1> function testme(a,b,c)
>> ncl 2> begin
>> ncl 3> a=2
>> ncl 4> return(1)
>> ncl 5> end
>> ncl 6> print(""+a)
>> (0) 5
>> ncl 7> print(""+testme(a,1,2))
>> (0) 1
>> ncl 8> print(""+a)
>> (0) 2
>>
>> Thanks,
>> saji
>> --
>>
>>
>> _______________________________________________
>> ncl-talk mailing list
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>
> --
> Saji N. Hameed
>
> APEC Climate Center
> 1463 U-dong, Haeundae-gu, +82 51 745
> 3951
> BUSAN 612-020, KOREA saji@apcc21.net
> Fax: +82-51-745-3999
>
>
>
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Fri, 16 Oct 2009 04:17:44 -0600