3分钟看懂YAML

• 介绍
• • - YAML vs JSON vs XML
• 语法
• • - 键值对
  • - 数组/列表
  • - 字典/对象
  • - 注释

YAML说白了和json一样，是储存数据的一种形式。看一下区别：

YAML

student:
	name: Mike
	age: 23
	gender: male
	hobbies:
	-	swimming
	-	tennis
	-	listening to music
	favorite food:
	-	hotpot
	-	dumpling
	address:
		city: Shanghai
		street: Nan Jin Road
		number: 1000

JSON

{
  "student": {
    "name": "Mike",
    "age": 23,
    "gender": "male",
    "hobbies": ["swimming", "tennis", "listening to music"],
    "favorite food": ["hotpot", "dumpling"],
    "address": {
      "city": "Shanghai",
      "street": "Nan Jin Road",
      "number": 1000
    }
  }
}

XML

  Mike
  23
  male
  swimming
  tennis
  listening to music
  hotpot
  dumpling
  

    Shanghai
    Nan Jin Road
    1000
  

Yaml主要依靠缩进来判别元素之间的关系，所以空格的数量特别重要！

键与值之间用冒号分隔，⚠️冒号后要有一个空格！

name: Mike
age: 23
gender: male

用减号代表当前元素是数组中的一个。⚠️YAML中的数组是有序的！

hobbies:
-	swimming
-	tennis
-	listening to music

favorite food:
-	hotpot
-	dumpling

更复杂的例子，对象的数组：

sports:
	- name: swimming
	  cost: 5 dollar
	  time: 1.5 hour
	  calorie: 200 k
	- name: tennis
	  cost: 10 dollar
	  time: 1 hour
	  calorie: 300 k

用相同数量的缩进代表他们同属一个对象。⚠️YAML中的字典/对象是无序的！

address:
	city: Shanghai
	street: Nan Jin Road
	number: 1000

# 这样写注释