Still worth being careful, but it can be useful when you have a set of common fields that everything of a certain group will have (such as a response object with basic status, debug info, etc. and then additional data based on the particular struct). I don't know why they let you embed multiple layers and multiple objects though. I've never gotten value out of anything but a "here's a single set of common fields struct embedding".

The fascinating bit to me is that there is a consolidateMultiples function in go/src/go/types/lookup.go (lines 286-304) that detects when multiple embedded types at the same depth provide the same field name. I wonder why they don’t do this for all levels. How deep could this even be in practice for it to matter? You could just have a hashmap with them all.

I hope the feature mentioned in the article will cause a compiler error.

However, I wouldn't use this approach when writing my own code.

It's a one of a few rough edges in Go.