How opencv 4.x API is different from previous version?

Question

I noted that opencv 4 is released and one difference is that API changed to be c++11 compliant.

What this really means?

How should I change my codes to be compat

Answer 1

I think the most vital impact is you need to use a c++11 compiler.

Also, it may not change the interface but allow them to make use of the updated Language changes, such as smart pointers, etc.