# listop style:
foo;
foo "bar", $baz, 42;
foo (1, 2, 3), [1, 2, 3];  # one List, one Array
foo { $_ * 10 }, 2, 4, 6;  # one Block, three Int

# function-call style:
foo();
foo( "bar", $baz, 42 );
foo( (1, 2, 3), [1, 2, 3] );  # one List, one Array
foo( { $_ * 10 }, 2, 4, 6 );  # one Block, three Int