double pointers A pointer (whose value is another variable’s address) which points to another pointer copying a pointer to another pointer copies the address copying a de-referenced pointer to another de-referenced pointer updates the value of the one to another https://gist.github.com/viggy28/604cda186ff1b872d562b31ca3976732 package main import "fmt" type DB struct { Name string } // double pointer // a pointer which points to another pointer func wrapperFunc(config **DB) func() error { return func() error { cfg := &DB{} (*cfg).