init project

internal/utils/arrays.go

@@ -0,0 +1,20 @@
+package utils
+
+import (
+	"fmt"
+	"strings"
+)
+
+func ArrayToString(a []int64, delim string) string {
+	return strings.Trim(strings.Replace(fmt.Sprint(a), " ", delim, -1), "[]")
+}
+
+func Contains(slice []string, item string) bool {
+	set := make(map[string]struct{}, len(slice))
+	for _, s := range slice {
+		set[s] = struct{}{}
+	}
+
+	_, ok := set[item]
+	return ok
+}