MySQL  8.0.19
Source Code Documentation
ORDER_with_src::null Struct Reference

Private empty class to implement type-safe NULL assignment. More...

Detailed Description

Private empty class to implement type-safe NULL assignment.

This private utility class allows us to implement a constructor from NULL and only NULL (or 0 – this is the same thing) and an assignment operator from NULL. Assignments from other pointers still prohibited since other pointer types are incompatible with the "null" type, and the casting is impossible outside of ORDER_with_src class, since the "null" type is private.


The documentation for this struct was generated from the following file: