mapstructure

Go library for decoding generic map values into native Go structures.

  • 所有者: mitchellh/mapstructure
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  • 許可證: MIT License
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mapstructure Godoc

mapstructure is a Go library for decoding generic map values to structures
and vice versa, while providing helpful error handling.

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.

Installation

Standard go get:

$ go get github.com/mitchellh/mapstructure

Usage & Example

For usage and examples see the Godoc.

The Decode function has 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:

{
  "type": "person",
  "name": "Mitchell"
}

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.

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概覽
名稱與所有者mitchellh/mapstructure
主編程語言Go
編程語言Go (語言數: 1)
平台
許可證MIT License
所有者活动
創建於2013-05-20 05:24:34
推送於2024-06-25 15:17:23
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發布數17
最新版本名稱v1.5.0 (發布於 )
第一版名稱v1.0.0 (發布於 )
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