slice::stride

找出項目之間的距離 (valarray 配量。

size_t stride( ) const;

傳回值

項目之間的距離 (valarray 配量。

範例

// slice_stride.cpp
// compile with: /EHsc
#include <valarray>
#include <iostream>

int main( )
{
   using namespace std;
   int i;
   size_t strideVAR;

   valarray<int> va ( 20 ), vaResult;
   for ( i = 0 ; i < 20 ; i += 1 )
      va [ i ] =  3 * ( i + 1 );

   cout << "The operand valarray va is:\n ( ";
      for ( i = 0 ; i < 20 ; i++ )
         cout << va [ i ] << " ";
   cout << ")." << endl;

   slice vaSlice ( 4 , 5 , 3 );
   vaResult = va [ vaSlice ];

   cout << "The slice of valarray va is vaResult = "
        << "va[slice( 4, 5, 3)] =\n ( ";
      for ( i = 0 ; i < 5 ; i++ )
         cout << vaResult [ i ] << " ";
   cout << ")." << endl;

   strideVAR = vaSlice.stride ( );
   cout << "The stride of slice vaSlice is: "
        << strideVAR << "." << endl;
}

需求

標題: <valarray>

命名空間: std

請參閱

參考

slice Class