What is json in Golang ?

 json is a built-in package in Golang that provides functions for encoding and decoding data in JSON format. JSON (JavaScript Object Notation) is a lightweight data interchange format that is widely used for web APIs and other data exchange formats.

Some of the functions and types provided by the json package include:

json.Marshal(): encodes a Go data structure into a JSON string

json.Unmarshal(): decodes a JSON string into a Go data structure

json.Encoder: provides an efficient way to encode JSON data into an output stream

json.Decoder: provides an efficient way to decode JSON data from an input stream

json.RawMessage: a type that represents an unparsed JSON message

The json package is very useful for working with web APIs and other data formats that use JSON. It provides a simple and consistent API for encoding and decoding data in JSON format, and supports a wide range of data types such as strings, numbers, arrays, and maps.