auto x = ["bob":1, "fred":2]

assert_equal(2, x.size());


// Make sure vector elements are copied into place for consistency with
// map inplace construction
var i = 1;
var y = ["a":i];

assert_equal(1, y["a"]);
i = 3;
assert_equal(3, i);
assert_equal(1, y["a"]);
