Yaml Basic

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发布于：Aug 6, 2020

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Offical Tutorial

Basic

key: value

Yaml will auto detect data type, but some time that’s what we don’t want. So you need Type cast :

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age: !!str 10

• type avaliable
  • str
  • int
  • float
  • bool
  • null
  • ISO date type:2020-1-1 11:11:22
  • array

Array

Can not use TAB in yaml. Use indentation to grading and - char to sign as a array.

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arr:
  - item1
    - item11
  - item2
    - item21
    - item22

Object

Can not use TAB in yaml. Use indentation to grading but no - char.

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person:
  name: ring
  age: 10

Long string value

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message:
  a long long long
  long long
  long msg

To end with \n

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message: >
  a long long long
  long long
  long msg

To end with \n for each line

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message: |
  a long long long
  long long
  long msg

  #a long long long\nlong long\nlong msg\n

Use Reference

Assign with pointer

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father: &father_info
  name: ring

monitor: *father_info

# value of monitor same as value of father

New part

Yaml not allow you have dulplicate key. You can use --- to statement in a new part

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name: ring
---
name: ring

End of File

You can use ... to tell yaml, this is the end.