import json

struct Request {
	a int
}

fn parse(s string) ?Request {
	return json.decode(Request, s)
}

fn parse2(s string) ?Request {
	req := json.decode(Request, s)?
	return req
}

fn main() {
	println(parse('{"a": 22} ')?)
	println(parse2('{"a": 22} ')?)
}