SFINAE for array asignment seems to be solved.

#pragma once

#include<type_traits>

#include<utility>

#include <TNL/Containers/Algorithms/ArrayOperations.h>

namespace TNL {

    typedef char YesType[1];

    typedef char NoType[2];

    template< typename C > static YesType& test( decltype(&C::getArrayData) );

    //template< typename C > static NoType& test(...);

    template< typename C > static YesType& test( decltype(std::declval< C >().getArrayData()) );

    template< typename C > static NoType& test(...);

public:

    static constexpr bool value = ( sizeof( test< T >(0) ) == sizeof( YesType ) );