How to Convert Snake Case Keys to Camel Case in JSON using Go?

Converting Snake Case Keys to Camel Case in JSON

Many applications encounter the need to convert JSON objects with snake_case keys to camelCase keys for consistency or interoperability. Go provides a set of tools that simplify this process, enabling developers to perform such conversion recursively.

In Go, unmarshaling JSON into a map allows one to inspect and modify keys. If the unmarshal operation is successful, the map's keys can be modified according to desired naming conventions, and a recursive call to the conversion function can be made for each value.

For example, a function can be implemented to convert keys to uppercase. This can be achieved by unmarshaling the JSON into a map, converting each key to uppercase, deleting the original key, adding the converted key to the map, and recursively calling the conversion function on the value of the newly added key. The converted map can then be marshaled back to JSON.

This approach allows for flexible key conversions based on custom rules. It can be applied to nested JSON structures, ensuring that all keys adhere to the desired camelCase naming convention.

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