void main() { S s1 = {a: 3}; S s2 = {a: 3, b: "test string"}; S s3 = {a: 3, b: "test string", c: {x: 3.14, y: 3 + 4}}; T t = { someStructMember1: 2, someStructMember2: 42, someStructMember3: null, // foobar someOtherMember1: objA, someOtherMember2: objB, someOtherMember3: 0, somethingMore: null, someFlagInThisStruct: -1 }; }