Made database ID manipulations safer

src/libs/utils/include/utils/Utils.hpp

@@ -19,12 +19,25 @@
 
 #pragma once
 
+#include <algorithm>
 #include <functional>
 
-template<class T, class Compare = std::less<>>
-constexpr T clamp(T v, T lo, T hi, Compare comp = {})
+namespace Utils
 {
-	assert(!comp(hi, lo));
-	return comp(v, lo) ? lo : comp(hi, v) ? hi : v;
-}
 
+	template<class T, class Compare = std::less<>>
+	constexpr T clamp(T v, T lo, T hi, Compare comp = {})
+	{
+		assert(!comp(hi, lo));
+		return comp(v, lo) ? lo : comp(hi, v) ? hi : v;
+	}
+
+	template <typename Container, typename T>
+	void
+	push_back_if_not_present(Container& container, const T& val)
+	{
+		if (std::find(std::cbegin(container), std::cend(container), val) == std::cend(container))
+			container.push_back(val);
+	}
+
+}