diff --git a/src/ConstString.hpp b/src/ConstString.hpp
index 4486a96..5b18269 100644
--- a/src/ConstString.hpp
+++ b/src/ConstString.hpp
@@ -19,7 +19,8 @@ namespace Arbutils {
 
         inline static constexpr char charToLower(const char c) { return (c >= 'A' && c <= 'Z') ? c + ('a' - 'A') : c; }
         inline static uint32_t constexpr LowercaseHash(char const* input) {
-            return charToLower(*input) ? static_cast<uint32_t>(charToLower(*input)) + 33 * LowercaseHash(input + 1) : 5381;
+            return charToLower(*input) ? static_cast<uint32_t>(charToLower(*input)) + 33 * LowercaseHash(input + 1)
+                                       : 5381;
         }
 
         inline static int constexpr Length(const char* str) { return *str ? 1 + Length(str + 1) : 0; }
@@ -51,6 +52,10 @@ namespace Arbutils {
 
         inline constexpr bool operator==(const ConstString& rhs) const { return _hash == rhs._hash; }
         inline constexpr bool operator!=(const ConstString& rhs) const { return _hash != rhs._hash; }
+        inline constexpr bool operator==(const std::string& rhs) const { return _hash == Hash(rhs.c_str()); }
+        inline constexpr bool operator!=(const std::string& rhs) const { return _hash != Hash(rhs.c_str()); }
+        inline constexpr bool operator==(const char* rhs) const { return _hash == Hash(rhs); }
+        inline constexpr bool operator!=(const char* rhs) const { return _hash != Hash(rhs); }
     };
 }