go でmapや配列等を pretty print (var_dumpみたいな何か)と yaml の読み込み ref: http://qiita.com/yamasaki-masahide/items/327ad9c423de1e35215f

config

mail_from: masahide.y@gmail.com
to: [masahide.y@gmail.com]
var:
  c: 2
  d: [3, 4]

example.go

    m := make(map[interface{}]interface{})
    err = goyaml.Unmarshal([]byte(config), &m)
    if err != nil {
        panic(err)
    }
    //fmt.Printf("--- m:\n%# v\n\n", m)
    pretty.Printf("--- m:\n%# v\n\n", m)

file2.txt

$ go run main.go
--- m:
map[interface {}]interface {}{
    "mail_from": "masahide.y@gmail.com",
    "to":        []interface {}{
        "masahide.y@gmail.com",
    },
    "var": map[interface {}]interface {}{
        "c": int(2),
        "d": []interface {}{
            int(3),
            int(4),
        },
    },
}