From a4dc158e560c76af89215c8778dc54b34fe7524f Mon Sep 17 00:00:00 2001
From: Edo <edoardo.sanguineti222@gmail.com>
Date: Sun, 10 Apr 2022 10:29:58 +0200
Subject: [PATCH] Update string.cpp

---
 src/utils/string.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/utils/string.cpp b/src/utils/string.cpp
index 89cf17d..93211f1 100644
--- a/src/utils/string.cpp
+++ b/src/utils/string.cpp
@@ -32,16 +32,16 @@ std::vector<std::string> split(const std::string& s, const char delim) {
 }
 
 std::string to_lower(std::string text) {
-  std::transform(text.begin(), text.end(), text.begin(), [](const char input) {
-    return static_cast<char>(tolower(input));
+  std::transform(text.begin(), text.end(), text.begin(), [](unsigned char input) {
+    return static_cast<char>(std::tolower(input));
   });
 
   return text;
 }
 
 std::string to_upper(std::string text) {
-  std::transform(text.begin(), text.end(), text.begin(), [](const char input) {
-    return static_cast<char>(toupper(input));
+  std::transform(text.begin(), text.end(), text.begin(), [](unsigned char input) {
+    return static_cast<char>(std::toupper(input));
   });
 
   return text;