Data commit

Task/Add-a-variable-to-a-class-instance-at-runtime/Go/add-a-variable-to-a-class-instance-at-runtime.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+    "bufio"
+    "fmt"
+    "log"
+    "os"
+)
+
+type SomeStruct struct {
+    runtimeFields map[string]string
+}
+
+func check(err error) {
+    if err != nil {
+        log.Fatal(err)
+    }
+}
+
+func main() {
+    ss := SomeStruct{make(map[string]string)}
+    scanner := bufio.NewScanner(os.Stdin)
+    fmt.Println("Create two fields at runtime: ")
+    for i := 1; i <= 2; i++ {
+        fmt.Printf("  Field #%d:\n", i)
+        fmt.Print("       Enter name  : ")
+        scanner.Scan()
+        name := scanner.Text()
+        fmt.Print("       Enter value : ")
+        scanner.Scan()
+        value := scanner.Text()
+        check(scanner.Err())
+        ss.runtimeFields[name] = value
+        fmt.Println()
+    }
+    for {
+        fmt.Print("Which field do you want to inspect ? ")
+        scanner.Scan()
+        name := scanner.Text()
+        check(scanner.Err())
+        value, ok := ss.runtimeFields[name]
+        if !ok {
+            fmt.Println("There is no field of that name, try again")
+        } else {
+            fmt.Printf("Its value is '%s'\n", value)
+            return
+        }
+    }
+}