C++Primer里有印象的就不赘述了

Uniform Initialization

Brace Initialization (avaliable everywhere)

1. Aggregates initialized top-to-bottom/front-to-back.
2. Non-aggregates initialized via constructor.

int a[] = {1,2,3,4};
struct Point {int x, y;};
const Point p {10, 20};
const Point p = {10, 20};
std::vector<int> v {1,2,3};

implicit narrowing not allowed in c++11

struct Point {int x, y};
Point p1 {1, 2.5};  // error in c++11
Point p1 {1, static_cast<int>(2.5)}; // OK
struct A {double x};
A a {1}; // OK

std::initializer_list parameters allow “initialization” lists to be passed to functions.

class A {
    public:
    A(std::initializer_list<int> ids) {}
};

A a {1, 2, 3, 4};

Concurrency Support