JSTL not operator question

[Tim Manchester]

Howdy,

I'm looking at a jsp that isn't working as I thought it should and I see several cases where a comparison is done that the '!' operator is used as opposed to 'not'. I haven't read that you can use '!' alone so I was wondering if that was a problem with the following lines...

<c:if test="${moduleData.itemBean.hasOutstandingInfo && !module.custom}">
.
 <c:if test="${itemLink!=null && !empty itemLink}">
.
 <c:if test="${! isSuppressed}">

I do know you can use '!=' which I imagine could lead to the confusion with '!'. Am I correct about this?

Regards,

Tim

[Bear Bibeault]

! as a unary operator and the not keyword are synonymous.

[Tim Manchester]

OK, thanks!

Regards,

Tim

[Tim Manchester]

Follow up question:

Is it a bug to say

!empty

should you say

! empty

?

Regards,

Tim

[Bear Bibeault]

The whitespace is moot. Are you seeing a concrete problem?

[Tim Manchester]

Yes but it's difficult to get the data so I was hoping it would be a jsp issue. It looks more like a data issue now. Thanks.

Regards,

Tim

[Bear Bibeault]

It usually is. Some perverse law says that the problem will always be in the area hardest to debug!