unshift

See the current Perl documentation for unshift.

Here is our local, out-dated (pre-5.6) version:

unshift - prepend more elements to the beginning of a list

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.