Go 클로저

1 개요

Go closure, Go function closure
Go 클로저, Go 함수 클로저

package main
import "fmt"
func main() {
    fmt.Println( func(x, y int) int { return x+y }(2,3) )
}

package main
import "fmt"
func main() {
    mySum := func(x, y int) int { return x+y }
    fmt.Println( mySum(2,3) )
}

// https://tour.golang.org/moretypes/25
package main

import "fmt"

func adder() func(int) int {
	sum := 0
	return func(x int) int {
		sum += x
		return sum
	}
}

func main() {
	pos, neg := adder(), adder()
	for i := 0; i < 10; i++ {
		fmt.Println(
			pos(i),
			neg(-2*i),
		)
	}
}

// https://gobyexample.com/closures
package main

import "fmt"

func intSeq() func() int {
    i := 0
    return func() int {
        i++
        return i
    }
}

func main() {

    nextInt := intSeq()

    fmt.Println(nextInt())
    fmt.Println(nextInt())
    fmt.Println(nextInt())

    newInts := intSeq()
    fmt.Println(newInts())
}

2 같이 보기