I was wondering why it's always a quiz to figure out whether a value is
empty or not. let's say I've
$var = {
array => [],
hash => {},
};
in perl I can say
do {...} if @{ $var{array} };
do {...} if %{ $var{hash} };
in template toolkit, passing $var to the template (var=>$var), this
won't DWIM:
IF var.array;
INCLUDE process_array;
END;
or
IF var.hash;
INCLUDE process_hash;
END;
it will always call the INCLUDE, no matter if there is somethins in
array/hash or not.
so in case of array I must always remember to use:
IF var.array.size;
and in case of hash, I don't even remember what was the trick, I think
IF var.hash.keys.size;
or checking on one of the keys.
When you code the template you still think perl and I always get burned
on these subtle bugs when I rely on 'IF var.array' to DWIM :(
Any special reasons for this behavior?
_____________________________________________________________________
Stas Bekman JAm_pH -- Just Another mod_perl Hacker
http://stason.org/ mod_perl Guide http://perl.apache.org/guide
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