YAML syntax-yaml turn Golang

Basic rules

YAML has the following basic rules:

1, Case sensitive

2. Use indentation to represent hierarchical relationships

3, prohibit the use of tab indentation, you can only use the space key

4. There is no limit to the indentation length, as long as the element alignment indicates that the elements belong to a hierarchy.

5. Use # to indicate comments

6. Strings can be marked without quotation marks

1, map, hash list

Use a colon (:) to denote a key-value pair, and all key-value pairs of the same indentation belong to a map, for example:

# Yaml says

Age:12

Name:huang

# The corresponding JSON representation

{' Age ': ' ' name ': ' Huang '}

You can also write a map on one line:

# Yaml says

{' Age ': 12,name:huang} # ' Age ' represents a string

# The corresponding JSON representation

{' Age ': ' ' name ': ' Huang '}

2, List, array

Use a hyphen (-) to indicate:

# Yaml says

-A

-B

-12

# corresponds to the JSON representation

[' A ', ' B ', 12]

It can also be written in one line:

# Yaml says

[A,b,c]

# corresponds to the JSON representation

[' A ', ' B ', ' C ']

3, scalar, pure quantity

The smallest unit of data can no longer be split.

Data structure nesting

The elements of map and list can be another map or list or a pure quantity. There are 4 common nesting of data

1. Map nested map

# Yaml says

Websites

YAML:yaml.org

ruby:ruby-lang.org

Python:python.org

Perl:use.perl.org

# corresponds to the JSON representation

{websites:

{YAML: ' yaml.org ',

Ruby: ' ruby-lang.org ',

Python: ' python.org ',

Perl: ' Use.perl.org '}}

2. Map nested list

# Yaml says

Languages

-Ruby

-Perl

-Python

-C

# corresponds to the JSON representation

{languages: [' Ruby ', ' Perl ', ' Python ', ' C ']}

3. List nested list

# Yaml says

-

-Ruby

-Perl

-Python

-

-C

-C + +

-Java

# corresponds to the JSON representation

[[' Ruby ', ' Perl ', ' Python '], [' C ', ' C + + ', ' Java ']

In addition, you can also indicate the structure as follows

# method 2

--Ruby

-Perl

-Python

--C

-C + +

-Java

# Method 3

-[Ruby,perl,python]

-[C,c++,java]

4. List nested map

# Yaml says

-

Id:1

Name:huang

-

Id:2

Name:liao

# corresponds to the JSON representation

[{id:1, Name: ' Huang '}, {id:2, Name: ' Liao '}]

Depth

#Block style represents the struct body

Block_style:

Clark:evans

Ingy:döt Net

Oren:ben-kiki

Such as:

Blockstyle struct{

Clark string Yaml: "Clark"

Ingy:string yaml: "ingy"

Oren:string yaml: "Oren"

} ' Yaml: 'block_style'

Yaml Turn Golang

Data, err: = Ioutil. ReadFile (./xxx.yaml)

If err! = Nil {

Entry. Witherror (ERR). PANICLN ("Failed to read file")

}

BS: = blockstyle{}

If err: = Yaml. Unmarshal (data, &bs); Err! = Nil {

Entry. Witherror (ERR). PANICLN ("Deserialization failed")

}