在模板中定义常量值的最佳方法

Question

When I implement vector3 class, I have a simple question.

There are several ways to define a constant value in a template. What are these differences? And which one should I use?

template<typename T> ;

1: T{1}

2: T{1.0f}

3: T{1.0}

4: static_cast<T>(1.0)

Answer 1

None of those make a difference, unless you have a type that converts from int differently than from float. I prefer the first, as it is the briefest