Golang: Nest Function

By Xah Lee. Date: .

To define a Function inside a function, declare a variable and give it a function value. Like this:

var f = func(params) return_type {body}

or use the variable shortcut:

f := func(params) return_type {body}

package main

import "fmt"

func main() {
	// this is a function, inside the function main
	var ff = func(x int) int {
		return x + 1
	}
	fmt.Println(ff(3)) // 4
}

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