protocols in Swift

Swift heavily uses protocol inheritance. Because of this there are deep chains of inheritance in the standard library and in Foundation as well as third party libraries. For this reason it can be very helpful to see a visual graph of the inheritance.

SwiftDoc.org provides a valuable resource. You can see the inheritance graphs of protocols. For example, see:

Inheritance Graph for Int — SwiftDoc.org

There doesn't appear to be an easy way to find it on the site. Instead you need to write the correct URL path. For example: