instruction: Write Go code to go by example: json
output: ```dockerfile
  $ go run json.go
  true
  1
  2.34
  "gopher"
  ["apple","peach","pear"]
  {"apple":5,"lettuce":7}
  {"Page":1,"Fruits":["apple","peach","pear"]}
  {"page":1,"fruits":["apple","peach","pear"]}
  map[num:6.13 strs:[a b]]
  6.13
  a
  {1 [apple peach]}
  apple
  {"apple":5,"lettuce":7}
  {1 [apple peach]}
  ```