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Unveiling the Secrets of Unmarshalling JSON into a Map
In the world of JSON parsing, efficiently loading data into an appropriate data structure is crucial. One commonly encountered task is unmarshalling JSON data into a map[string]interface{}, particularly when dealing with large volumes of strings.
Issue:
Given a simple JSON file containing an array of strings, the objective is to populate a map[string]interface{} without resorting to explicit iteration and insertion using a loop.
Solution:
To achieve this, leverage the power of encoding/json.Unmarshal. This versatile function provides an elegant solution by directly unmarshalling the JSON data into the desired map structure.
Example:
<code class="go">package main import "fmt" import "encoding/json" func main() { src_json := []byte(`{"fruits":["apple","banana","cherry","date"]}`) var m map[string][]string err := json.Unmarshal(src_json, &m) if err != nil { panic(err) } fmt.Printf("%v", m["fruits"][0]) //apple }</code>
This code snippet seamlessly unmarshals the JSON data into the map[string][]string without any intermediate processing. By utilizing this approach, you can efficiently load large JSON datasets without the need for explicit looping and manual insertion.
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