golang high order function example

Example 1: golang high order function example

package main

import "fmt"

func main() {
    add, subtract := getAddSubtract()
    print(3, 4, add, subtract)
}

func print(x, y int, add func(int, int) int, subtract func(int, int) int) {
    fmt.Printf("Sum is: %d\n", add(x, y))
    fmt.Printf("Difference Value is: %d\n", subtract(x, y))
}

func getAddSubtract() (func(int, int) int, func(int, int) int) {
    add := func(x, y int) int {
        return x + y
    }
    subtract := func(x, y int) int {
        return x - y
    }
    return add, subtract
}

Example 2: golang high order function example

package main

import "fmt"

func main() {
    areaF := getAreaFunc()
    print(3, 4, areaF)
}

func print(x, y int, area func(int, int) int) {
    fmt.Printf("Area is: %d\n", area(x, y))
}

func getAreaFunc() func(int, int) int {
    return func(x, y int) int {
        return x * y
    }
}

Example 3: golang high order function example

package main

import (  
    "fmt"
)

func simple(a func(a, b int) int) {  
    fmt.Println(a(60, 7))
}

func main() {  
    f := func(a, b int) int {
        return a + b
    }
    simple(f)
}