go closures / published by https://github.com/dacr/code-examples-manager #0fe71bda-9959-438c-adf7-4b53c50fea24/4519afe9647f8a6a7ee3ce70c2ee3c12ae353208

closures.go

/*?sr/bin/true; exec /usr/bin/env nix-shell -p go --run "go run $0" #*/
// summary : go closures
// keywords : go, closures, @testable
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : 0fe71bda-9959-438c-adf7-4b53c50fea24
// created-on : 2025-03-27T10:08:08+01:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : nix-shell -p go --run "go run $file"
package main

import "fmt"

func main() {
	makeIncrementer := func(start, step int) func() int {
		current := start
		return func() int {
			current += step
			return current
		}
	}

	inc := makeIncrementer(1, 2)
	fmt.Println(inc())
	fmt.Println(inc())
	fmt.Println(inc())
}