upd: return empty string if vec is empty

1 files changed, 5 insertions, 0 deletions

diff --git a/src/utils/string.cpp b/src/utils/string.cpp
index 8a4c1cc..9727f3f 100644
--- a/src/utils/string.cpp
+++ b/src/utils/string.cpp
@@ -1,5 +1,6 @@
 #include "string.hpp"
 
+#include <iostream>
 #include <sstream>
 #include <string>
 #include <vector>
@@ -23,6 +24,10 @@ namespace bot {
 
       std::string join_vector(const std::vector<std::string> &vec,
                               char delimiter) {
+        if (vec.empty()) {
+          return "";
+        }
+
         std::string str;
 
         for (auto i = vec.begin(); i != vec.end() - 1; i++) {