什么是POI？我已经看到这个术语在C模板的上下文中被多次使用.这是什么意思？
解决方法
POI表示实例化点.
从C模板：完整指南
10.3.2 Points of Instantiation
A point of instantiation (POI) is created when a code construct refers to a template specialization in such a way that the definition of the corresponding template needs to be instantiated to create that specialization. The POI is a point in the source where the substituted template could be inserted.:
