NotionExp

Helena Modrzejewska's 181st Birthday

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有求必应屋 The Room of Requirement

有求必应屋, 又称 "来去屋" , 霍格沃兹中一个神秘房间, 只有在一个人真正需要的时候,它才会出现. -- 哈利·波特与凤凰社, 第十八章 (邓布利多军)The Room of Requirement , also known as the Come and Go Room , was a secret room within Hogwarts Castle, that only appears when a person is in great need of it.

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package myclass

type React struct {
	X float32
	Y float32
	Z float32
}

func (*React) Area(x, y float32) float32 {
	return x * y
}

func (r *React) Ver(x, y, z float32) float32 {
	return r.Area(x, y) * z
}

type Music struct {
	Id     string `json:"id"`
	Name   string
	Artist string
	Source string
	Type   string
}

type MusicManager struct {
	musics []Music
}

func NewMusicManager() *MusicManager {
	return &MusicManager{make([]Music, 0)}
}

func (m *MusicManager) Len() int {
	return len(m.musics)
}
func (m *MusicManager) Add(music *Music) (*MusicManager, error) {
	m.musics = append(m.musics, *music)
	return m, nil
}

func (m *MusicManager) Find(id string) (*Music, error) {
	if m.Len() < 1 {
		return nil, nil
	}
	for _, m := range m.musics {
		if m.Id == id {
			return &m, nil
		}
	}
	return nil, nil
}

购买云服务器的步骤略过, SSH连接的方法这里也不赘述, 可以自行百度搜索, 有很多教程.

PIC_20150329_235255_21B.jpg

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