///var a = new Dictionary()
///a["key"] = 5
///a["key"]
5
///a["key"] = 6
///var key2 = new Test()
///a[key2] = 23
///var key3 = new Test()
///a[key3] = "Key3 True Value"
///a["key3"] = "Key3 False Value"
///var key4 = {"toString": function() { return "key4"; }}
///a[key4] = "Key4 True Value"
///a["key4"] = "Key4 False Value"
///a[13] = "i've been found!"
///a["13"] = "no I haven't"
///a[1.123] = "this violates Rust!"
///a["1.123"] = "this is perfectly acceptable"
///a[undefined] = "oh no"
///a["undefined"] = "uh huh..."
///a[null] = "oh YES!"
///a["null"] = "yeah sure"
///a[true] = "true"
///a["true"] = "stringy true"
///a[false] = "false"
///a["false"] = "stringy false"
///"key" in a
true
///key2 in a
true
///key3 in a
true
///"key3" in a
true
///key4 in a
true
///"key4" in a
true
///13 in a
true
///1.123 in a
true
///"1.123" in a
true
///undefined in a
true
///"undefined" in a
true
///null in a
true
///"null" in a
true
///true in a
true
///"true" in a
true
///false in a
true
///"false" in a
true
///a[a] = a
///a in a
true
