maps

headFirst/args/main.go

@@ -3,7 +3,6 @@ package main
 import (
 	"fmt"
 	"main/sub"
-	"os"
 )
 
 func jp (mylist ...int) {
@@ -13,10 +12,10 @@ func jp (mylist ...int) {
 }
 
 func main() {
-	args := os.Args[1]
-	res := sub.Kek(args)
-	fmt.Println(res)
-
-	jp(1,2,3,4)
+	// args := os.Args[1]
+	// res := sub.Kek(args)
+	// fmt.Println(res)
+	res := sub.Kek("data.txt")
+	jp(res...)
 }
 

headFirst/maps/data.txt

@@ -0,0 +1,9 @@
+Alexander
+Alexey
+Andrew
+Vitaly
+Alexander
+Vitaly
+Sergey
+Sergey
+Alexander

headFirst/maps/go.mod

@@ -0,0 +1,3 @@
+module main
+
+go 1.24.5

headFirst/maps/main.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+	"main/sub"
+)
+
+func main() {
+	counter := make(map[string]int)
+
+	ret := sub.Kek("data.txt")
+	for _,name := range ret {
+		counter[name]++
+	}
+	for key,val := range counter {
+		fmt.Println(key,val)
+	}
+}

headFirst/maps/sub/sub.go

@@ -0,0 +1,21 @@
+package sub
+
+import (
+	"bufio"
+	"log"
+	"os"
+)
+
+func Kek(fileName string) []string {
+	var seg []string
+	file, err := os.Open(fileName)
+	if err != nil {
+		log.Fatal("Cannot open file")
+	}
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		seg = append(seg, scanner.Text())
+	}
+	file.Close()
+	return seg
+}