Ah, not so! You've ask for a scalar, but you're getting an array! If you had done:

sub foo ($) { ... }

@a = (1,10,100);
foo(@a);        # no error, '3' is passed to foo()
foo(1,10,100);  # error, too many args
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Jeff[japhy]Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area)
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;