proxy.golang.org : github.com/ardanlabs/mapstructure
Package mapstructure is a Go library for decoding generic map values to structures and vice versa, while providing helpful error handling. Base code comes from: https://github.com/mitchellh/mapstructure This package has added higher level support for flattening out JSON documents. This library is most useful when decoding values from some data stream (JSON, Gob, etc.) where you don't _quite_ know the structure of the underlying data until you read a part of it. You can therefore read a `map[string]interface{}` and use this library to decode it into the proper underlying native Go structure. Usage & Example For usage and examples see the [Godoc](http://godoc.org/github.com/mitchellh/mapstructure). The `Decode`, `DecodePath` and `DecodeSlicePath` functions have examples associated with it there. But Why?! Go offers fantastic standard libraries for decoding formats such as JSON. The standard method is to have a struct pre-created, and populate that struct from the bytes of the encoded format. This is great, but the problem is if you have configuration or an encoding that changes slightly depending on specific fields. For example, consider this JSON: Perhaps we can't populate a specific structure without first reading the "type" field from the JSON. We could always do two passes over the decoding of the JSON (reading the "type" first, and the rest later). However, it is much simpler to just decode this into a `map[string]interface{}` structure, read the "type" key, then use something like this library to decode it into the proper structure. Sometimes you have a large and complex JSON document where you only need to decode a small part. It is nice to be able to define and pull the documents and fields you need without having to map the entire JSON structure. Sometimes you have a slice of documents that you need to decode into a slice of structures Just Unmarshal your document into a slice of maps and decode the slice Sometimes you have a document with arrays You can decode within those arrays
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purl: pkg:golang/github.com/ardanlabs/mapstructure
License: Apache-2.0
Latest release: over 5 years ago
First release: over 5 years ago
Namespace: github.com/ardanlabs
Stars: 18 on GitHub
Forks: 6 on GitHub
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Last synced: 30 days ago