Because @_ is localised for the subroutine. Since you called subroutine with no parms, the @_ it's operating from has undef.

As for &subroutine, @_ is not localised and the existing one is passed in. $_ need not apply outside the sub in any event -- the subroutine deals with @_.

--
Me spell chucker work grate. Need grandma chicken.

In reply to Re(3): NEWBIE Brain Teaser #2, by nysus by yakko
in thread NEWBIE Brain Teaser #2, by nysus by nysus

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