package main

import (
	"fmt"
	"os"
)

// Foo is a type.
type Foo struct {
	Name string `json:"name"`
	n    int
}

func (f *Foo) String() string { return fmt.Sprintf("%s:%d", f.Name, f.n) }

func main() {
	ch := make(chan int, 10)
	go func() { ch <- 1 }()
	select {
	case v := <-ch:
		fmt.Println(v, 0x1f, 1e9, 'c', `raw`)
	default:
		os.Exit(1)
	}
	var m map[string][]interface{} = nil
	_ = m
}
