michael@0: // The Map constructor can take an argument that is an array of pairs.
michael@0: 
michael@0: var arr = [["zero", 0], ["one", 1], ["two", 2]];
michael@0: var m = Map(arr);
michael@0: for (var [k, v] of arr)
michael@0:     assertEq(m.get(k), v);