Embed Notice

But the most dominant technique on display is the most controversial one: implicit defaults, that let you drop more syntax.

You see if from the very first character, because Swift's default visibility is internal, so you don't need to mark internal methods with a sigil or keyword.

And in almost every case, there is a very reasonable objection to that implicit rule. In this case, that internal methods might allow unintentional exposing of private invariants to other parts of your code.