Take this code:
$#mdCntrs = -1;
$#array returns the index of last element of array and returns -1 when array is empty.
But this assigning -1, what does that mean?
What does assigning -1 to $#array do?
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1 Answers
It changes the length of the array, in this case it will clear the entire array.
From perldoc perldata:
Assigning to
$#daysactually changes the length of the array. Shortening an array this way destroys intervening values.
It goes on to say:
The following are equivalent:
@whatever = (); $#whatever = -1;
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