Encoding without defining structs

Basic data types, slices, and maps can be used to encode JSON data.

How to do it...

• Use a map to represent JSON objects:

  config:=map[string]any{
    "ver": "1.0",
    "Name": "config",
    "type": "example",
    }
  data, err:=json.Marshal(config)
  // `{"ver":"1.0","Name":"config","type":"example"}`

• Use a slice to represent JSON arrays:

  numbersWithNil:=[]any{ 1, 2, nil, 3 }
  data, err:=json.Marshal(numbersWithNil)
  // `[1,2,null,3]`

• Match the desired JSON structure to Go equivalents:

  configurations:=map[string]map[string]any {
    "cfg1": {
       "ver": "1.0",
       "Name": "config1",
    },
    "cfg2": {
       "ver": "1.1...