Functional programming in Golang

Pass function as a function parameter

package main

import "fmt"

func main() {
    print(area, 2, 4)
    print(sum, 2, 4)
}

func print(f func(int, int) int, a, b int) {
    fmt.Println(f(a, b))
}

func area(a, b int) int {
    return a * b
}

func sum(a, b int) int {
    return a + b
}

Reference