// classes and uniform initialization #include <iostream> using namespace std; class Circle { double radius; public: Circle(double r) { radius = r; } double circum() {return 2*radius*3.14159265;} }; int main () { Circle foo (10.0); // functional…

1 统一初始化(Uniform Initialization) 在C++ 11之前,所有对象的初始化方式是不同的,经常让写代码的我们感到困惑.C++ 11努力创造一个统一的初始化方式. 其语法是使用{}和std::initializer_list,先看示例. int values[]{ 1, 2, 3 }; std::vector<int> v{ 2, 3, 6, 7 }; std::vector<std::string> cities{ "Berlin", &…

1. Uniform Initialization , , }; std::vector<, , , , , , }; std::vector<std::string> cities { "Berlin", "New York", "London", "Braunschweig", "Cairo", "Cologne" }; std::complex<double…

Classes are an expanded concept of data structures: like data structures, they can contain data members, but they can also contain functions as members.   An object is an instantiation of a class. In terms of variables, a class would be the type, and…

// classes and uniform initialization #include <iostream> using namespace std; class Circle { double radius; public: Circle(double r) { radius = r; } double circum() {return 2*radius*3.14159265;} }; int main () { Circle foo (10.0); // functional for…

转自:http://blog.csdn.net/zwvista/article/details/2429781 原文请见http://en.wikipedia.org/wiki/C%2B%2B0x. Rvalue reference and move semantics 右值引用与转移语义 在标准C++语言中,临时量(术语为右值,因其出现在赋值表达式的右边)可以被传给函数,但只能被接受为const &类型.这样函数便无法区分传给const &的是真实的右值还是常规变量.而且,由于类型为co…

Declaration of variables   C++ is a strongly-typed language, and requires every variable to be declared with its type before its first use. This informs the compiler the size to reserve in memory for the variable and how to interpret its value. The s…

Before C++11,there was no easy way to do things like initialize a std::vector or std::map(or a custom container) to a set of values. You could do so for an old C-style array, but not easily for STL collections. Initializer Lists provide a solution to…

C++17/14/11 Overview Many of these descriptions and examples come from various resources (see Acknowledgements section), summarized in my own words. Also, there are now dedicated readme pages for each major C++ version. C++17 includes the following n…

目录 语言层面 模板表达式中的空格 nullptr和std::nullptr_t 自动推导类型----auto 一致性初始化----Uniform Initialization 初始化列表(initializer_list) explicit range-based for =default, =delete Alias Template 与 Template Template parameter Type Alias using noexcept override final decltype…