基元的直接初始化与复制初始化

Direct Initialization vs Copy Initialization for Primitives(基元的直接初始化与复制初始化)

问题描述

在初始化 int 或指针等原始类型时，可以使用 copy-initialization 或 direct-initialization.

When initializing primitive types like int or pointers one can use either copy-initialization or direct-initialization.

int a = 10;
int b(10);

虽然后一种方式更适合带有构造函数的对象，但我没有看到人们将它用于原语.我知道使用 '=' 运算符有点更自然"(尤其是对于数字而言)，但是有没有人在现实生活中编写代码:

Although the latter way is preffered for objects with constructors, I don't see people using it for primitives. I understand that it is kind of "more natural" (especially for numbers) to use the '=' operator but is there anybody writing things like in real-life code:

for (int i(0); i < 5; ++i) {
    cout << i << endl;
}

谢谢.

这个问题询问的是编码风格和最佳实践，而不是技术实现.

The question asks about coding styles and best practices rather than technical implementation.

推荐答案

有些人这样做是为了保持一致.

Some people do this to be consistent.

在模板中，代码可以是

for (T i(0); i < 5; ++i) {
    cout << i << endl;
}

在任何地方都这样写可以使编码风格保持一致.

and writing it that way everywhere would make the coding style consistent.

这篇关于基元的直接初始化与复制初始化的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！