perldoc -f unshift
unshift ARRAY,LIST
Does the opposite of a "shift". Or the opposite
of a "push", depending on how you look at it.
Prepends list to the front of the array, and
returns the new number of elements in the array.
unshift(ARGV, '-e') unless $ARGV[0] =~ /^-/;
Note the LIST is prepended whole, not one element
at a time, so the prepended elements stay in the
same order. Use "reverse" to do the reverse.
addendum: If you choose to use shift instead
of unshift, you will not run out of memory, and you will
see only one element ("1") printed out, which is maybe
what you were expecting in the first place.
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