c++ - C++ 中的 "translation unit"是什么？

Question

我当时正在阅读Scott Meyers 写的“Effective C++”遇到了“翻译单元”这个词。

谁能给我解释一下:

1. 究竟是什么？

2. 在使用 C++ 编程时，我应该何时考虑使用它？

3. 是只和C++有关，还是可以和其他编程语言一起使用？

我可能已经在不知道这个词的情况下使用它......

Answer 1

来自 here : ( wayback machine link )

According to standard C++ (wayback machine link) : A translation unit is the basic unit of compilation in C++. It consists of the contents of a single source file, plus the contents of any header files directly or indirectly included by it, minus those lines that were ignored using conditional preprocessing statements.

A single translation unit can be compiled into an object file, library, or executable program.

The notion of a translation unit is most often mentioned in the contexts of the One Definition Rule, and templates.