C++ 返回小数,保留自定义位数
template <class T> //! Return a decimal in base of decimal separatorstd::string GetDecimal(T in_Value, int in_DecimalSeparator){std::stringstream ss;ss << std::setiosflags(std::ios::fixed | std::ios::showpoint | std::ios::right);ss << std::setprecision(in_DecimalSeparator) << in_Value;return ss.str();}