Исходники и презентации

lessons/generics_and_reflection/reflect_elem/main.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"fmt"
+	"reflect"
+)
+
+func main() {
+	var value float64 = 3.14
+	v := reflect.ValueOf(&value) // copy of value
+
+	fmt.Println("type of v:", v.Type())
+	fmt.Println("settability of v:", v.CanSet())
+	fmt.Println("addresability of v:", v.CanAddr())
+
+	fmt.Println("type of v.Elem():", v.Elem().Type())             // dereference
+	fmt.Println("settability of v.Elem():", v.Elem().CanSet())    // dereference
+	fmt.Println("addresability of v.Elem():", v.Elem().CanAddr()) // dereference
+
+	v.Elem().SetFloat(2.7)
+
+	fmt.Println(v.Elem().Addr())
+	fmt.Println("value:", value)
+	fmt.Println("address:", &value)
+}