Go Object Oriented Programming Methods
Example
In Go a method is
a function that acts on a variable of a certain type, called the receiver
the receiver can be anything, not only structs but even a function, alias types for built in types such as int, string, bool can have a method, an exception to this rule is that interfaces(discussed later) cannot have methods, since an interface is an abstract definition and a method is an implementation, trying it generate a compile error.
combining structs and methods you can get a close eqivalent of a class in Object Oriented programming.
a method in Go has the following signature
func (name receiverType) methodName(paramterList) (returnList) {}
package main
type Admin struct {
Username, Password string
}
func (admin Admin) Delete() {
fmt.Println("Admin Deleted")
}
type User struct {
ID uint64
FullName, Email string
Admin
}
func (user User) SendEmail(email string) {
fmt.Printf("Email sent to: %s\n", user.Email)
}
func main() {
admin := Admin{
"zola",
"supersecretpassword",
}
user := User{
1,
"Zelalem Mekonen",
"[email protected]",
admin,
}
user.SendEmail("Hello") // Email sent to: [email protected]
admin.Delete() // Admin Deleted
}
