update: directory structure

advfuncs/10b-named-params/main.go

@@ -0,0 +1,53 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/inancgumus/learngo/magic"
+	//
+	// Use the following one for the panicking library:
+	// magic "github.com/inancgumus/learngo/magicpanic"
+	//
+)
+
+func main() {
+	files := []string{
+		"pngs/cups-jpg.png",
+		"pngs/forest-jpg.png",
+		"pngs/golden.png",
+		"pngs/work.png",
+		"pngs/shakespeare-text.png",
+		"pngs/empty.png",
+	}
+
+	args := os.Args[1:]
+	if len(args) != 1 {
+		fmt.Println("png or jpg?")
+		return
+	}
+
+	list(args[0], files)
+
+	// fmt.Println("catch me if you can!")
+}
+
+func list(format string, files []string) {
+	valids, err := magic.Detect(format, files)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	fmt.Printf("Correct Files:\n")
+	for _, valid := range valids {
+		fmt.Printf(" + %s\n", valid)
+	}
+}