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You can also use a pointer tostructpointer. In Golang, struct (struct) is a user-defined type that allows grouping/composing different types into a single type. To use a pointer to a struct, you can use＆Operators, i.e., the address operator. Golang allows programmers to access the fields of a struct without explicitly dereferencing.
Example 1:Here, we create a struct named Employee with two variables. In the main function, create an instance of the struct, namely emp, and then, you can pass the address of the struct to a pointer representing the concept of the struct. There is no need to explicitly use dereferencing, as it will give the same result as the following program (both ABC).
package main
import "fmt"
//Define the struct
type Employee struct {
//Setting the field
name string
empid int
}
func main() {
//Instance created
//Employee struct type
emp := Employee{"ABC", 19078}
//Here, it is a pointer to a struct
pts := &emp
fmt.Println(pts)
//Accessing the struct field (employee's name)
//Using a pointer, but here we have not used explicit dereferencing
fmt.Println(pts.name)
//By explicitly using dereferencing
//The result is the same as above
fmt.Println((*pts).name)
}Output:
&{ABC 19078}
ABC
ABCExample 2:You can also use pointers, as shown below to modify the value of a struct member or a struct literal:
package main
import "fmt"
//Define the struct
type Employee struct {
name string
empid int
}
func main() {
//Instance created
//Employee struct type
emp := Employee{"ABC", 19078}
//Here, it is a pointer to a struct
pts := &emp
//Display the value
fmt.Println(pts)
//Update the value of name
pts.name = "XYZ"
fmt.Println(pts)
}Output:
&{ABC 19078}
&{XYZ 19078}