* Implemented string builder

include/cppcore/misc/string_builder.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <sstream>
+
+namespace cppcore
+{
+
+    struct string_builder
+    {
+    private:
+        std::ostringstream os;
+
+    public:
+        /**
+         * @brief Write something to the string builder
+         */
+        template<typename TArg>
+        string_builder& operator<<(TArg&& arg);
+
+        /**
+         * @brief Get the constructed string.
+         */
+        inline std::string str() const;
+
+        /**
+         * @brief Get the constructed string.
+         */
+        inline operator std::string() const;
+    };
+
+}
+
+#include "string_builder.inl"

include/cppcore/misc/string_builder.inl

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "string_builder.h"
+
+namespace cppcore
+{
+
+    /* string_builder */
+
+    template<typename TArg>
+    string_builder& string_builder::operator<<(TArg&& arg)
+    {
+        os << std::forward<TArg>(arg);
+        return *this;
+    }
+
+    std::string string_builder::str() const
+        { return os.str(); }
+
+    string_builder::operator std::string() const
+        { return str(); }
+
+}