Revision of ArrayViewExample

#include <iostream>

#include <list>

#include <vector>

#include <TNL/Containers/Array.h>

#include <TNL/Containers/ArrayView.h>

using namespace TNL;

using namespace std;

/***

 * The following works for any device (CPU, GPU ...).

   using IndexType = typename ArrayType::IndexType;

   using ViewType = Containers::ArrayView< int, Device >;

   ArrayType _a1( size ), _a2( size );

   ViewType a1( _a1 ), a2( _a2 );

   ViewType a1 = _a1.getView();

   ViewType a2 = _a2.getView();

   /***

    * You may initiate the array view using setElement

   /***

    * You may also assign value to all array view elements ...

    */

   a2 = 0.0;

   a2 = 0;

   /***

    * Simple array view values checks can be done as follows ...

    * More efficient way of array view elements manipulation is with the lambda functions

    */

   ArrayType _a3( size );

   ViewType a3( _a3 );

   ViewType a3 = _a3.getView();

   auto f1 = [] __cuda_callable__ ( IndexType i ) -> int { return 2 * i; };

   a3.evaluate( f1 );

    */

   a1.save( "a1.tnl" );

   a2.load( "a1.tnl" );

   std::remove( "a1.tnl" );

   if( a2 != a1 )

      std::cerr << "Something is wrong!!!" << std::endl;