Methods

A method is basically a function that you attach to a type. For example, let's assume we have a struct type called Person:

type Person struct{
    name string
    age int
}

Go allows us to attach a method to that type like this:

func (p Person) GetName()string{
  return p.name
}

The part between the func keyword and the function name, GetName(), is known as the receiver of the method.

Let's say we declare a value of type Person, like this:

var p = Person{
name: "Jason",
age: 29,
}

Now, we can invoke the GetName method of value p, as follows:

p.GetName()

Let's create another method called GetAge(), which returns the age of the attached person. Here is the code to do so:

func (p Person) GetAge()int{
  return p.age
}

Now, we'll see what type embedding is.