对于非指针类型，使用static_cast而不是C样式转换有什么优势吗？ [英] Is there any advantage in using static_cast rather than C-style casting for non-pointer types?

问题描述

我很清楚使用 static_cast 而不是使用C风格的指针类型转换的优点。

I am well aware of the advantage in using static_cast rather than C-style casting for pointer types.

如果指针类型不兼容，则：

If the pointer types are incompatible, then:

• static_cast 将产生一个编译结果源代码中特定行的时间错误


• C样式转换可能导致程序执行中随机点的运行时错误

• static_cast will yield a compile-time error at a specific line within the source code
• C-style casting might lead to a runtime error at a "random" point in the execution of the program

但是我找不到非指针类型的任何类似示例。

But I am unable to find any similar example for non-pointer types.

，两种类型的转换方法对于非指针类型都产生相同的结果。

In other words, both casting methods yield the same result for non-pointer types.

是正确的，还是我错过了任何事情？

Is that correct, or have I missed anything?

如果可以， static_cast 是否仅用于非指针类型以保持编码一致性？

If yes, is static_cast used for non-pointer types only in order to maintain coding consistency?

推荐答案

其他两个答案尚未提及的一个优点是， static_cast 更容易发现。众所周知，括号的含义在C ++中已重载，因此很难发现邪恶的（甚至是错误的）强制类型转换。但是，当我看到以 _cast 结尾的内容时，就像是精神上的颠簸：我放慢脚步，仔细检查为什么类型系统被颠覆。

One advantage which the other two answers didn't mention yet is that static_cast is much easier to spot. The meaning of parentheses is notoriously overloaded in C++ and it can be difficult to spot evil (or even incorrect) casts. When I see something ending in _cast though, it's like a mental speed bump: I slow down and carefully check why the type system is being subverted.

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