add emptyinterface2any

Author: bigwhite

emptyinterface2any/any.go

@@ -0,0 +1,6 @@
+// +build !go1.18
+//go:build !go1.18
+
+package main
+
+type any = interface{}

emptyinterface2any/go.mod

@@ -0,0 +1,3 @@
+module demo
+
+go 1.18

emptyinterface2any/main.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"demo/pkg1"
+	"demo/pkg2"
+	"fmt"
+)
+
+func main() {
+	var a any = 5
+	fmt.Println(a)
+
+	pkg1.F1()
+	pkg2.F2()
+}

emptyinterface2any/pkg1/any.go

@@ -0,0 +1,6 @@
+// +build !go1.18
+//go:build !go1.18
+
+package pkg1
+
+type any = interface{}

emptyinterface2any/pkg1/pkg1.go

@@ -0,0 +1,8 @@
+package pkg1
+
+import "fmt"
+
+func F1() {
+	var a any = "pkg1.F1"
+	fmt.Println(a)
+}

emptyinterface2any/pkg2/any.go

@@ -0,0 +1,6 @@
+// +build !go1.18
+//go:build !go1.18
+
+package pkg2
+
+type any = interface{}

emptyinterface2any/pkg2/pkg2.go

@@ -0,0 +1,8 @@
+package pkg2
+
+import "fmt"
+
+func F2() {
+	var a any = "pkg2.F2"
+	fmt.Println(a)
+}