Data commit

Task/JSON/Go/json-1.go

@@ -0,0 +1,25 @@
+package main
+
+import "encoding/json"
+import "fmt"
+
+func main() {
+    var data interface{}
+    err := json.Unmarshal([]byte(`{"foo":1, "bar":[10, "apples"]}`), &data)
+    if err == nil {
+        fmt.Println(data)
+    } else {
+        fmt.Println(err)
+    }
+
+    sample := map[string]interface{}{
+        "blue":  []interface{}{1, 2},
+        "ocean": "water",
+    }
+    json_string, err := json.Marshal(sample)
+    if err == nil {
+        fmt.Println(string(json_string))
+    } else {
+        fmt.Println(err)
+    }
+}

Task/JSON/Go/json-2.go

@@ -0,0 +1,59 @@
+package main
+
+import "encoding/json"
+import "fmt"
+
+type Person struct {
+    Name string   `json:"name"`
+    Age  int      `json:"age,omitempty"`
+    Addr *Address `json:"address,omitempty"`
+    Ph   []string `json:"phone,omitempty"`
+}
+
+type Address struct {
+    Street string `json:"street"`
+    City   string `json:"city"`
+    State  string `json:"state"`
+    Zip    string `json:"zip"`
+}
+
+func main() {
+    // compare with output, note apt field ignored, missing fields
+    // have zero values.
+    jData := []byte(`{
+        "name": "Smith",
+        "address": {
+            "street": "21 2nd Street",
+            "apt": "507",
+            "city": "New York",
+            "state": "NY",
+            "zip": "10021"
+        }
+    }`)
+    var p Person
+    err := json.Unmarshal(jData, &p)
+    if err != nil {
+        fmt.Println(err)
+    } else {
+        fmt.Printf("%+v\n  %+v\n\n", p, p.Addr)
+    }
+
+    // compare with output, note empty fields omitted.
+    pList := []Person{
+        {
+            Name: "Jones",
+            Age:  21,
+        },
+        {
+            Name: "Smith",
+            Addr: &Address{"21 2nd Street", "New York", "NY", "10021"},
+            Ph:   []string{"212 555-1234", "646 555-4567"},
+        },
+    }
+    jData, err = json.MarshalIndent(pList, "", "    ")
+    if err != nil {
+        fmt.Println(err)
+    } else {
+        fmt.Println(string(jData))
+    }
+}