Extensions.h

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#include <vector>
#include <string>

namespace Library
{
        class StringUtils
        {
        public:
                static std::vector<std::string> Split(std::string s, std::string delimiter)
                {
                        std::vector<std::string> elems;
                        size_t pos = 0;
                        std::string token;
                        while ((pos = s.find(delimiter)) != std::string::npos)
                        {
                                token = s.substr(0, pos);
                                elems.push_back(token);
                                s.erase(0, pos + delimiter.length());
                        }
                        elems.push_back(s);
                        return elems;
                }

                static bool Replace(std::string& str, const std::string& from, const std::string& to)
                {
                        size_t start_pos = str.find(from);
                        if (start_pos == std::string::npos)
                                return false;
                        str.replace(start_pos, from.length(), to);
                        return true;
                }
        };

        class MathUtils
        {
        public:
                static float Clamp(float x, float min, float max)
                {
                        return x < min ? min : (x > max ? max : x);
                }
        };
}