Integer division question
Hi,
I have the following el code in a jsp:
length=${fn:length(myCollection) / 2}
where length is an attribute of type String (I can't change it to
Integer, this is an attribute of the Struts's iterate tag).
As fn:length() returns an integer and as 2 is an integer, I was
expecting that the value for length would be 6 for instance,
but I got 6.0.
Is it an intended feature of the division operator of the jstl/el or is
it a bug?
Pierre
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Re: Integer division question
Per the JSP 2.0 Spec., both operands have been coerced to Double and then the
/ operator has been applied.
Quoting Pierre Scemla [EMAIL PROTECTED]:
Hi,
I have the following el code in a jsp:
length=${fn:length(myCollection) / 2}
where length is an attribute of type String (I can't change it to
Integer, this is an attribute of the Struts's iterate tag).
As fn:length() returns an integer and as 2 is an integer, I was
expecting that the value for length would be 6 for instance,
but I got 6.0.
Is it an intended feature of the division operator of the jstl/el or is
it a bug?
Pierre
--
Kris Schneider mailto:[EMAIL PROTECTED]
D.O.Tech http://www.dotech.com/
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Integer division question
Thanks for your answer.
Does anybody know why they chose to do that instead of following the
behavior of the JLS?
Is there a way to force the conversion to an Integer?
Pierre
Kris Schneider wrote:
Per the JSP 2.0 Spec., both operands have been coerced to Double and then the
/ operator has been applied.
Quoting Pierre Scemla [EMAIL PROTECTED]:
Hi,
I have the following el code in a jsp:
length=${fn:length(myCollection) / 2}
where length is an attribute of type String (I can't change it to
Integer, this is an attribute of the Struts's iterate tag).
As fn:length() returns an integer and as 2 is an integer, I was
expecting that the value for length would be 6 for instance,
but I got 6.0.
Is it an intended feature of the division operator of the jstl/el or is
it a bug?
Pierre
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Integer division question
The EL was actually more inspired by ECMAScript and XPath than Java. In both
ECMAScript and XPath, division results in a floating-point value in accordance
with IEEE 754. If what you really want is a string representation of the number
without any fractional digits, you could use:
fmt:formatNumber var=... value=${fn:length(myCollection) / 2}
pattern=#/
Quoting Pierre Scemla [EMAIL PROTECTED]:
Thanks for your answer.
Does anybody know why they chose to do that instead of following the
behavior of the JLS?
Is there a way to force the conversion to an Integer?
Pierre
Kris Schneider wrote:
Per the JSP 2.0 Spec., both operands have been coerced to Double and then
the
/ operator has been applied.
Quoting Pierre Scemla [EMAIL PROTECTED]:
Hi,
I have the following el code in a jsp:
length=${fn:length(myCollection) / 2}
where length is an attribute of type String (I can't change it to
Integer, this is an attribute of the Struts's iterate tag).
As fn:length() returns an integer and as 2 is an integer, I was
expecting that the value for length would be 6 for instance,
but I got 6.0.
Is it an intended feature of the division operator of the jstl/el or is
it a bug?
Pierre
--
Kris Schneider mailto:[EMAIL PROTECTED]
D.O.Tech http://www.dotech.com/
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
