Making a Universal Vector2 Type in C++ - Part 2: Library Author Perspective
In part 1, we looked at how application developers can create a universal Vector2 type that converts to and from different library types. This approach works great when you control the application code, but what if you’re a library author? How can you design your Vector2 type to be automatically compatible with other libraries without knowing which ones your users might combine with yours? The Library Author’s Challenge As a library author, you can’t hard-code conversion operators for every possible Vector2 type that exists. You don’t know which other libraries your users will combine with yours, and adding dependencies just for type compatibility would be unreasonable. What you need is a way to make your Vector2 type generically compatible with any other Vector2-like type that has the same structure. ...