Util.h

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#pragma once
 
#include <string>
#include <vector>
#include <set>
 
namespace WasatchVCPP
{
    class Util
    {
        public:
            static std::string sprintf(const char* fmt, ...);
            static std::string toHex(const std::vector<uint8_t>& data);
            static std::string toHex(const uint8_t* data, int len);
            static std::string toLower(const std::string& s);
            static std::string timestamp();
            static void sleepMS(int ms);
 
            template<typename T> 
            static std::string join(const T& values, const char* fmt, const char* delim = ", ")
            {
                std::string fmtDelim = sprintf("%%s%s", fmt);
                std::string s;
                for (typename T::const_iterator i = values.begin(); i != values.end(); i++)
                    if (s.size() == 0)
                        s += sprintf(fmt, *i);
                    else
                        s += sprintf(fmtDelim.c_str(), delim, *i);
                return s;
            }
    };
}