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arrayutils.h
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/
arrayutils.h
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/**
* @file
* This file is part of UTILS
*
* @author Sebastian Rettenberger <sebastian.rettenberger@tum.de>
*
* @copyright Copyright (c) 2015-2017, Technische Universitaet Muenchen.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UTILS_ARRAYUTILS_H
#define UTILS_ARRAYUTILS_H
#include "common.h"
namespace utils
{
/**
* Collection of useful functions for arrays
*/
class ArrayUtils
{
public:
/**
* Size of a static array
*
* @param a The array
* @return The size (number of elements) of the array
*/
template<typename T, size_t N>
static size_t size(const T (&a)[N])
{
return N;
}
/**
* Size of a zero length static array
*
* @param a The array
* @return 0
*/
template<typename T>
static size_t size(const T*)
{
return 0;
}
/**
* Size of a container
*
* @param a A container of any type
*
* @note This function has the same signature as the function for
* static arrays and can be used with automatic template argument deduction.
*/
template<typename T>
static typename std::enable_if<has_size<T>::value, size_t>::type
size(const T &a)
{
return a.size();
}
};
}
#endif // UTILS_ARRAYUTILS_H