github.com/icza/dyno (go): Package dyno is a utility to work with dynamic objects at ease.  Primary goal is to easily handle dynamic objects and arrays (and a mixture of these) that are the result of unmarshaling a JSON or YAML text into an interface{} for example. When unmarshaling into interface{}, libraries usually choose either map[string]interface{} or map[interface{}]interface{} to represent objects, and []interface{} to represent arrays. Package dyno supports a mixture of these in any depth and combination.  When operating on a dynamic object, you designate a value you're interested in by specifying a path. A path is a navigation; it is a series of map keys and int slice indices that tells how to get to the value.  Should you need to marshal a dynamic object to JSON which contains maps with interface{} key type (which is not supported by encoding/json), you may use the ConvertMapI2MapS converter function.  The implementation does not use reflection at all, so performance is rather good.  Let's see a simple example editing a JSON text to mask out a password. This is a simplified version of the Example_jsonEdit example function:  Output will be:  Example shows a few of dyno's features, such as getting, setting and appending values to / from a dynamic object.   Example_jsonEdit shows a simple example how JSON can be edited. The password placed in the JSON is masked out.
Keywords: array|dictionary|dynamic-objects|map|path|slice