Here are methods that store and retrieve … something, probably. The author had to make up method names because map[string]interface{} doesn't have an interface

Here are methods that store and retrieve … something, probably. The author had to make up method names because map[string]interface{} doesn't have an interface we could satisfy. func (ctx *Context) SetObject(object interface{}, key string) { … } func (ctx *Context) Object(key string) interface{} { … } Here a caller has to provide a method that takes an arbitrary number of … whatever. type rowScanner interface { Scan(...interface{}) error }