`axes`

doesn’t include the value, unlike `enumerate`

. And actually, it’s not `enumerate`

you want, even for one-dimensional vectors. You should use `pairs`

, since enumerate always starts counting at 1 no matter what sort of array you have (even 0-indexed arrays).

```
julia> a = randn(3,2)
3×2 Array{Float64,2}:
0.446886 0.168215
-0.0590402 1.89755
0.0420936 -1.62462
julia> for (ind, val) in pairs(a)
println(ind, ": ", val)
end
CartesianIndex(1, 1): 0.4468857733868482
CartesianIndex(2, 1): -0.0590401519075785
CartesianIndex(3, 1): 0.04209357154257153
CartesianIndex(1, 2): 0.16821454509635914
CartesianIndex(2, 2): 1.8975549461332841
CartesianIndex(3, 2): -1.624623544140236
```

You can get `(i, j)`

from calling `Tuple(ind)`

, but you should rather use the cartesian index directly:

```
function new_matrix(matrix)
new_matrix = copy(matrix)
for (ind, element) in pairs(matrix)
(i, j) = Tuple(ind)
new_matrix[ind] = i * j * matrix[ind] # or ind[1]*ind[2] * matrix[ind]
end
return new_matrix
end
```