import json
import os

struct DbConfig {
	foo int
}

fn test_json_decode_with_optional_arg() {
	if ret := print_info() {
		println(ret)
	} else {
		println(err)
	}
	assert true
}

fn print_info() ?string {
	dbconf := json.decode(DbConfig, os.read_file('dbconf.json') ?) ?
	println(dbconf)
	return '$dbconf'
}