Tensor concatenation and appending

[wangjiawen2013]

Hi,
How to concat two tensors or append an element to an existing tensor ?

let tensor1 = Tensor::<NdArray, 1>::from_floats([1,2,3]);
let tensor2 = Tensor::<NdArray, 1>::from_floats([4,5,6]);
// expected tensor3 [1,2,3,4,5,6]
let tensor3 = tensor1 concat tensor2

let mut tensor = Tensor::<NdArray, 1>::from_floats([1,2,3]);
// expected tensor [1, 2, 3, 4]
tensor.append(4)

[laggui]

Both manipulations can be accomplished with Tensor::cat for concatenating.

let tensor1 = Tensor::<B, 1>::from([1, 2, 3]);
let tensor2 = Tensor::<B, 1>::from([4, 5, 6]);

let tensor3 = Tensor::cat(vec![tensor1, tensor2], 0);

let tensor1 = Tensor::<B, 1>::from([1, 2, 3]);
let tensor2 = Tensor::<B, 1>::from([4]);

let tensor3 = Tensor::cat(vec![tensor1, tensor2], 0);