Hi Pedro,
The answer will depend on the final expression language. For now, the
behavior you note is caused by the experimental 'ECMAScript' expression
language included with EA3; it performs concatenation on values it sees
as Strings. In this experimental language, you can work around the
problem by explicitly parsing values as numeric, as follows:
<c:set var="foo">1</c:set>
<c:set var="foo" value="$1 + parseInt(foo)"/>
<c:expr value="$foo"/>
This will print "2".
(By the way, a note of caution is in order: all of EA3 is experimental
and subject to change in the upcoming, final standard. Don't get too used
to clever tricks and workarounds that are EA3-specific!)
--
Shawn Bayern
JSTL reference-implementation lead
Author, "JSP Standard Tag Library" (Manning,upcoming) http://jstlbook.com
On Mon, 28 Jan 2002, Pedro Diaz wrote:
> Hi all.
>
> After executing the next two lines
>
> <c:set var="foo">1</c:set>
> <c:set var="foo" value="$foo + 1"/>
>
> the value of foo is "11"
>
> Is there a way to get that the value of foo be 2 using expression
> language?
>
> Thanks in advance.
> Pedro.
>
>
> --
> To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]>
> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
>
--
To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]>
For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
