In Go, we use get and set methods to read or modify the value of private fields in a class.
Here's an example code:
package main
import (
"fmt"
)
type Person struct {
name string
age int
}
func (p *Person) GetName() string {
return p.name
}
func (p *Person) SetName(name string) {
p.name = name
}
func main() {
p := Person{name: "Alice", age: 25}
fmt.Println(p.GetName())
p.SetName("Bob")
fmt.Println(p.GetName())
}
In this example, we define a Person struct with two private fields, name and age. We then define two get and set methods for the name field:
- GetName() returns the value of name
- SetName(name string) assigns the value passed in to name
In the main function, we create a person object named p with the name "Alice" and age 25. We then use the GetName() method to print the person's name and SetName() to change the person's name to "Bob". Finally, we use the GetName() method again to print the updated name.
This allows us to enforce encapsulation in our class, ensuring that private fields can only be read or modified via our defined get and set methods.