update: log parser dir to input scanning

23-input-scanning/02-map-as-sets/main.go

@@ -0,0 +1,44 @@
+package main
+
+// 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/
+//
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+)
+
+func main() {
+	args := os.Args[1:]
+	if len(args) != 1 {
+		fmt.Println("Please type a search word.")
+		return
+	}
+	query := args[0]
+
+	in := bufio.NewScanner(os.Stdin)
+	in.Split(bufio.ScanWords)
+
+	// index the words
+	words := make(map[string]bool)
+	for in.Scan() {
+		words[in.Text()] = true
+	}
+
+	// unnecessary
+	// if _, ok := words[query]; ok {
+	// ...
+	// }
+
+	// answer the user query
+	if words[query] {
+		fmt.Printf("The input contains %q word.\n", query)
+		return
+	}
+	fmt.Printf("Sorry. The input does contain %q word.\n", query)
+}