diff --git a/components/CLParser/include/Modelec/CLParser.h b/components/CLParser/include/Modelec/CLParser.h
index 4cee155..2483605 100644
--- a/components/CLParser/include/Modelec/CLParser.h
+++ b/components/CLParser/include/Modelec/CLParser.h
@@ -13,6 +13,15 @@ public:
 
     [[nodiscard]] bool hasOption(const std::string& option) const;
 
+    template <typename T>
+    [[nodiscard]] T getOption(const std::string& option, T defaultValue) const {
+        if (!hasOption(option)) {
+            return defaultValue;
+        }
+
+        return static_cast<T>(std::stod(_options.at(option)));
+    }
+
     [[nodiscard]] std::optional<std::string> getOption(const std::string& option) const;
 
     [[nodiscard]] std::string getOption(const std::string& option, const std::string& defaultValue) const;
diff --git a/components/Utils/include/Modelec/Utils.h b/components/Utils/include/Modelec/Utils.h
index 06b9ce3..3d395c6 100644
--- a/components/Utils/include/Modelec/Utils.h
+++ b/components/Utils/include/Modelec/Utils.h
@@ -4,6 +4,8 @@
 #include <string>
 namespace Modelec
 {
+    #define PI 3.14159265358979323846
+
     bool startWith(const std::string& str, const std::string& start);
 
     bool endsWith(const std::string& str, const std::string& end);
diff --git a/example/main.cpp b/example/main.cpp
index 444ca05..e7126cf 100644
--- a/example/main.cpp
+++ b/example/main.cpp
@@ -7,7 +7,7 @@ int main(int argc, char* argv[]) {
 
     CLParser parser(argc, argv);
 
-    int port = std::stoi(parser.getOption("port", "8080"));
+    int port = parser.getOption("port", 8080);
 
     bool loggerMode = parser.hasOption("logger");