In this topic we learned about Go – Method.
Go programming language supports special types of functions called methods. In method declaration syntax, a “receiver” is present to represent the container of the function. This receiver can be used to call a function using “.” operator. For example −
Syntax
func (variable_name variable_data_type) function_name() [return_type]{
/* function body*/
}
Example
package main
import (
"fmt"
"math"
)
/* define a circle */
type Circle struct {
x,y,radius float64
}
/* define a method for circle */
func(circle Circle) area() float64 {
return math.Pi * circle.radius * circle.radius
}
func main(){
circle := Circle{x:0, y:0, radius:5}
fmt.Printf("Circle area: %f", circle.area())
}
When the above code is compiled and executed, it produces the following result −
Circle area: 78.539816
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