On Jun 28, 2010, at 7:12 AM, Iñaki Baz Castillo <ibc at aliax.net> wrote: > 2010/6/28 Alex Balashov <abalashov at evaristesys.com>: >> if(! $(var(dest){param.value,b})) >> >> which clearly cannot work as the parameter has no _value_. > > There should be a function like: > > $(var(dest){has_param,b}) I could not agree more. :-)