Hi, guys,

Let us have two tensors A and B. I want to obtain the tensor C of indices, containing the indices in A for the elements in B. The shape of C is the same as B.

For instance:

```
A = t.Tensor([1,2])
B = t.Tensor([[1,1,2],[2,2,1]])
C = (A == B)
```

I expect the result to be:

```
C = t.Tensor([[0,0,1],[1,1,0]])
```