"Li, Jialin" schreef:
> On Wed, May 14, 2008 at 4:01 PM, Tech list
> <[EMAIL PROTECTED]> wrote:
>
>> what is the correct way to get the number of items in an array?
>>
>> I used to use $#array
>>
>>
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>> http://learn.perl.org/
>>
>>
>>
>
> $#array is the index of the last item, so the number should be
> $#array + 1, or
> scalar @array
Please read perlvar about $[. Normally it is 0, but you can set it to a
different value, like -3 or 27.
The $#array is the last index of @array, so $array[$#array] is
equivalent to $array[-1].
The number of items in an array is returned by @array in scalar context,
examples:
scalar(@array)
(0+ @array)
if (0 < @array) { ... }
if (@array) { ... }
--
Affijn, Ruud
"Gewoon is een tijger."
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