printf_vector.h

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/* +---------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)               |
   |                          http://www.mrpt.org/                             |
   |                                                                           |
   | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file        |
   | See: http://www.mrpt.org/Authors - All rights reserved.                   |
   | Released under BSD License. See details in http://www.mrpt.org/License    |
   +---------------------------------------------------------------------------+ */
#pragma once

#include <mrpt/math/eigen_frwds.h>
#include <string>
#include <vector>
#include <cstdio>

namespace mrpt
{
        namespace utils
        {
                /** \addtogroup 
                  * @{ */

                /** Generates a string for a vector in the format [A,B,C,...] to std::cout, and the fmt string for <b>each</b> vector element. */
                template <typename T>
                std::string sprintf_vector(const char *fmt, const std::vector<T> &V )
                {
                        std::string ret = "[";
                        const size_t N = V.size();
                        for (size_t i=0;i<N;i++)
                        {
                                ret+= format(fmt,V[i]);
                                if (i!=(N-1)) ret+= ",";
                        }
                        ret+="]";
                        return ret;
                }
                /// @overload
                template <typename Derived>
                std::string sprintf_vector(const char *fmt, const Eigen::MatrixBase<Derived> &V )
                {
                        std::string ret = "[";
                        const size_t N = V.size();
                        for (size_t i=0;i<N;i++)
                        {
                                ret+= format(fmt,V[i]);
                                if (i!=(N-1)) ret+= ",";
                        }
                        ret+="]";
                        return ret;
                }

                /** Prints a vector in the format [A,B,C,...] to std::cout, and the fmt string for <b>each</b> vector element. */
                template <typename T>
                void printf_vector(const char *fmt, const std::vector<T> &V ) {
                        ::fputs(sprintf_vector(fmt, V).c_str(),stdout);
                }

                /** @} */  // end of grouping
        }
}