Fix Range template deduction guide to support single parameter

cpp/Platform.Ranges/Range[T].h

@@ -72,8 +72,8 @@
         public: template<typename TOther> requires std::convertible_to<T, TOther> constexpr explicit(not Internal::implicit_convertible_to<T, TOther>) operator Range<TOther>() const noexcept(noexcept(static_cast<TOther>(Minimum))) { return {static_cast<TOther>(Minimum), static_cast<TOther>(Maximum)}; }
     };
 
-    template<typename T, typename... U>
-    Range(T, U...) -> Range<std::common_type_t<T, U...>>;
+    template<typename... T>
+    Range(T...) -> Range<std::common_type_t<T...>>;
 }
 
 namespace std

examples/test_deduction_guide.cpp

@@ -0,0 +1,22 @@
+#include "../cpp/Platform.Ranges/Platform.Ranges.h"
+#include <iostream>
+#include <type_traits>
+
+int main()
+{
+    // Test single parameter deduction
+    auto range1 = Platform::Ranges::Range(5);
+    static_assert(std::is_same_v<decltype(range1), Platform::Ranges::Range<int>>);
+
+    // Test two parameter deduction  
+    auto range2 = Platform::Ranges::Range(1, 10);
+    static_assert(std::is_same_v<decltype(range2), Platform::Ranges::Range<int>>);
+
+    // Test mixed types deduction
+    auto range3 = Platform::Ranges::Range(1, 10.5);
+    static_assert(std::is_same_v<decltype(range3), Platform::Ranges::Range<double>>);
+
+    std::cout << "All deduction guide tests passed!" << std::endl;
+
+    return 0;
+}