libstdc++
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Reference to arbitrary subset of an array.
An indirect_array is a reference to the actual elements of an array specified by an ordered array of indices. The way to get an indirect_array is to call operator[](valarray<size_t>) on a valarray. The returned indirect_array then permits carrying operations out on the referenced subset of elements in the original valarray.
For example, if an indirect_array is obtained using the array (4,2,0) as an argument, and then assigned to an array containing (1,2,3), then the underlying array will have array[0]==3, array[2]==2, and array[4]==1.
Tp | Element type. |
std::indirect_array::indirect_array | ( | const indirect_array & | ) |
Copy constructor. Both slices refer to the same underlying array.
indirect_array& std::indirect_array::operator= | ( | const indirect_array & | ) |
Assignment operator. Assigns elements to corresponding elements of a.