Adds a value and reassigns the result to the variable

By listing the protocol name after a colon in the type declaration

By calling adopt(Protocol) in its initializer

Any constants and variables it references

Referring to the first two closure parameters without naming them

To exit early from a scope when a condition is not met

A value of any type at all, including function types

To write code that works with any type in a type-safe way

To force a function to accept only Int values

The function may suspend and must be awaited

The function runs only on the main thread

Swift Quiz