For getting the 'last defined index' in an array - if you are using it as a subscript - I prefer $array[-1] = $foo; over $array[$#array] = $foo;

$#array is still useful if you are looping over an array by index, like this 

for my $i (0..$#array) {
  # do something with $array[$i]
}

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-- Hofmator

In reply to Re4: where to look up "funny looking" perl notation (and an example) by Hofmator
in thread where to look up "funny looking" perl notation (and an example) by glwtta

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