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#ifndef ARRAY_OPERATION
#define ARRAY_OPERATION
#include <cstddef>
namespace opt_utilities
{
/////////Useful function///////////////////////////////////
template <typename T>
inline size_t get_size(const T& x)
{
return x.size();
}
template <typename T>
class element_type_trait
{
public:
typedef typename T::value_type element_type;
};
template <typename T>
class return_type_trait
{
public:
typedef T value_type;
typedef T& reference_type;
typedef const T& const_reference_type;
};
template <typename T>
inline typename
return_type_trait<typename element_type_trait<T>::element_type>::
const_reference_type get_element(const T& x,size_t i)
{
return x[i];
}
/*
template <typename T>
inline typename element_type_trait<T>::element_type& get_element(T& x,size_t i)
{
return x[i];
}
*/
template<typename T,typename TX>
inline void set_element(T& x,size_t i,
const TX& v)
{
x[i]=v;
}
template <typename T>
inline void resize(T& x,size_t s)
{
x.resize(s);
}
template <typename Tl,typename Tr>
inline Tl& opt_eq(Tl& lhs,const Tr& rhs)
{
return (lhs=rhs);
}
}
#endif
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