Исходники и презентации

lessons/interfaces/interface_internals/main.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"fmt"
+	"unsafe"
+)
+
+type eface struct {
+	typ unsafe.Pointer
+	val unsafe.Pointer
+}
+
+func main() {
+	var value int = 100
+	var i interface{} = value
+	fmt.Println("before:", i)
+
+	obj := (*eface)(unsafe.Pointer(&i))
+	*(*int)(obj.val) = 200
+	fmt.Println("after:", i)
+}