initial import

best-practices/single-method-interface/main.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"fmt"
+)
+
+type Logger interface {
+	Log(message string)
+}
+
+type LoggerFunc func(message string)
+
+func (l LoggerFunc) Log(message string) {
+	l(message)
+}
+
+func MyLogFunc(message string) {
+	fmt.Printf("I log %s\n", message)
+}
+
+func myMethodTakesTheLog(l Logger) {
+	l.Log("my log message")
+}
+
+func main() {
+	logger := LoggerFunc(MyLogFunc)
+	myMethodTakesTheLog(logger)
+}