julia

a3f710e2 - Copy for `CartesianIndices`/`LinearIndices` need not materialize (#53901)

Copy for `CartesianIndices`/`LinearIndices` need not materialize (#53901) Currently, ```julia julia> C = CartesianIndices((1:2, 1:2)) CartesianIndices((1:2, 1:2)) julia> copy(C) 2×2 Matrix{CartesianIndex{2}}: CartesianIndex(1, 1) CartesianIndex(1, 2) CartesianIndex(2, 1) CartesianIndex(2, 2) ``` However, seeing that a `CartesianIndices` is equivalent to an n-D range, there doesn't seem to be a need to materialize the result. This PR also ensures that `copy(C)` returns the same type as `C`. After this PR: ```julia julia> C = CartesianIndices((1:2, 1:2)) CartesianIndices((1:2, 1:2)) julia> copy(C) CartesianIndices((1:2, 1:2)) ``` Also, a similar change for `LinearIndices` is added.