conditional statement: indicator not blank

2007-04-30 Thread Corey Harper 

Hi folks --

Don't know if this is a bug report or just a general FYI.  I've been 
having trouble cleaning up 2nd indicators that aren't blank for 7xx fields.


I was using the syntax in the Tutorial.pod doc:
 if ($field_7xx->indicator(2) != ' ') {
   $field_7xx->update( ind2 => ' ' );
 }

However, this was failing to match 2nd indicator 0 (zero), which is 
definitely different from blank.


I tried the following variations to no avail:
* != '' (no space)
* != ' ' (with space)
* != undef
* != null
* != '#'
* !- '_'

I ended up having to use the following, which achieved the desired 
effect with any of the above in the first slot:


if ($field_7xx->indicator(2) != '' || $field_7xx->indicator(2) == 0) {

Thanks,
-Corey

--
Corey A Harper
Metadata Services Librarian
Bobst Library, B42-LL1
New York University
70 Washington Square South
New York, NY  10012
212.998.2479
[EMAIL PROTECTED]

RE: conditional statement: indicator not blank

2007-04-30 Thread Bryan Baldus 
On Monday, April 30, 2007 2:18 PM, Corey Harper wrote:
>I tried the following variations to no avail:
>* != '' (no space)
>* != ' ' (with space)
>* != undef
>* != null
>* != '#'
>* !- '_'
>
>I ended up having to use the following, which achieved the desired 
>effect with any of the above in the first slot:
>
>if ($field_7xx->indicator(2) != '' || $field_7xx->indicator(2) == 0) {

Would it not be better to use string comparison operators, ne and eq, since
indicators may not necessarily be numeric?

Please correct me if I am wrong.

Bryan Baldus
[EMAIL PROTECTED]
[EMAIL PROTECTED]
http://home.inwave.com/eija

Re: conditional statement: indicator not blank

2007-04-30 Thread Corey Harper 

Doh - thanks!  My carelessness chalked up to Monday morning.

Thanks to all who pointed this out on and off list!

-Corey

Bryan Baldus wrote:

On Monday, April 30, 2007 2:18 PM, Corey Harper wrote:

I tried the following variations to no avail:
* != '' (no space)
* != ' ' (with space)
* != undef
* != null
* != '#'
* !- '_'

I ended up having to use the following, which achieved the desired 
effect with any of the above in the first slot:


if ($field_7xx->indicator(2) != '' || $field_7xx->indicator(2) == 0) {


Would it not be better to use string comparison operators, ne and eq, since
indicators may not necessarily be numeric?

Please correct me if I am wrong.

Bryan Baldus
[EMAIL PROTECTED]
[EMAIL PROTECTED]
http://home.inwave.com/eija
 


--
Corey A Harper
Metadata Services Librarian
Bobst Library, B42-LL1
New York University
70 Washington Square South
New York, NY  10012
212.998.2479
[EMAIL PROTECTED]