On 07/09/07 12:45, Juha Heinanen wrote:
Daniel-Constantin Mierla writes:
> the script variables exist all the time, and cannot be null, they are 0
> if they are unassigned.
if so, how can i tell apart a non-assigned script variable from one that
has been assigned value 0?
:-) well, chicken-egg issue, would be the same as uninitialized value
with one which can get NULL via evaluation of an expression in assignment.
i would prefer if also non-assigned script variables could be null so
that script variable usage would be consistent with pseudo variable
usage.
operating with null cannot be consistent unless we change all PV
concept. $avp() = null deletes the avp, $var() = null, resets to 0, $du
= null (and other pv) set to null some internal structures. There are
different types of variables, they don't have same meaning, maybe C is
more consistent because there are var types, otherwise it very hard to
get same functionality everywhere.
Cheers,
Daniel
-- juha
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