| // compile | |
| // Copyright 2022 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| package main | |
| type None struct{} | |
| type Response interface { | |
| send(ctx *struct{}) | |
| } | |
| type HandlerFunc[Input any] func(Input) Response | |
| func Operation[Input any](method, path string, h HandlerFunc[Input]) { | |
| var input Input | |
| h(input) | |
| } | |
| func Get[Body any](path string, h HandlerFunc[struct{ Body Body }]) { | |
| Operation("GET", path, h) | |
| } | |
| func main() { | |
| Get("/", func(req struct{ Body None }) Response { | |
| return nil | |
| }) | |
| } |