Using net/http and json encoding to pull out nested json values and stored into map

go_github_rate_limit.go

package main

import (
    "fmt"
    "log"
    "net/http"
    "io/ioutil"
    "encoding/json"
)

/*
{
  "resources": {
    "core": {
      "limit": 60,
      "remaining": 60,
      "reset": 1483945005
    },
    "search": {
      "limit": 10,
      "remaining": 10,
      "reset": 1483941465
    }
  },
  "rate": {
    "limit": 60,
    "remaining": 60,
    "reset": 1483945005
  }
}
*/

func main() {
    // Simple Get request to the rate_limit api
    res, err := http.Get("https://api.github.com/rate_limit")
    if err != nil {
        log.Fatal(err)
    }
    // Storing response into variable github
    github, err := ioutil.ReadAll(res.Body)
    res.Body.Close()
    if err != nil {
	log.Fatal(err)
    }
    // Building variable map to capture response into
    var data map[string]interface{}
    // Unmarshaling github into data variable
    err = json.Unmarshal(github, &data)
    if err != nil {
	log.Fatal(err)
    }
    // Decending into nested "rate" json to call k,v pairs
    rate, ok := data["rate"].(map[string]interface{})
    if !ok {
        log.Fatal("oh no!")
    }
    // Call specific value and print
    fmt.Println("Rate Limit:", rate["limit"])
    // Iterate through k, v pair in rate map
    for k, v := range rate {
        fmt.Printf("Key: %v, Value: %v\n", k, v)
    }
}