The JSTL specification is clear: Constraints If specified, begin must be >= 0. If end is specified and it is less than begin, the loop is simply not executed. If specified, step must be >= 1
> -----Mensaje original----- > De: Nic Werner [mailto:[EMAIL PROTECTED] > Enviado el: lunes, 13 de octubre de 2003 0:14 > Para: [EMAIL PROTECTED] > CC: [EMAIL PROTECTED]; [EMAIL PROTECTED] > Asunto: RE: Simple iteration > > > Heh, yeah that was my workaround eventually, but I just felt > that there has to be a better way. It surprises me the tag > only supports one direction. > > Not being to start from a negative number while simply > 'counting' is odd also. Of course, iterating through a > collection wouldn't work, but just counting. > > So I guess if you had a collection of items and you wanted to > iterate backwards you would just use the same principle as > below but use the index instead. > > > Why not > > > > <c:forEach begin="0" end="20" var="i"> > > <option> > > <c:out value="${currentYear-i}"/> > > </option> > > </c:forEach> > > > > > >> -----Mensaje original----- > >> De: Nic Werner [mailto:[EMAIL PROTECTED] > >> Enviado el: domingo, 12 de octubre de 2003 23:34 > >> Para: [EMAIL PROTECTED] > >> Asunto: Simple iteration > >> > >> > >> This is a simple question, but is there any way to count > >> *backwards* in JSTL? > >> > >> Using the forEach tag, if begin=10 and end=0, I get an: 'end' < 0 > >> error > >> > >> I've also tried using step="-1" to no avail. > >> > >> Basically, I want to create a year pulldown box which > starts at the > >> currentyear and then displays the previous twenty years. > >> > >> <c:forEach begin="${currentYear}" end="${currentYear-20}" > step="-1" > >> var="year"> <option> <c:out value="${year}"/></option> </c:forEach> > >> > >> - Nic > >> > >> > >> > >> > --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> For additional commands, e-mail: > [EMAIL PROTECTED] > >> > >> > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
