Migrating from DTypePointer to UnsafePointer

[mmenendezg]

The Mojo team has confirmed in the nightly changelog that they will deprecate the DTypePointer, and they suggest migrating to UnsafePointer.

They have also changed the methods of the UnsafePointer.

This will require to change the way we initialize the pointers for the data of the NDArrays.

I can help on the migration using Max Nightly for the NDArray struct.

[MadAlex1997]

@mmenendezg Has it been confirmed that it will make it to the main branch in the next Mojo update? They have changed direction regarding this several times.

[mmenendezg]

I've only seen the changelog on the nightly branch, but I guess we should wait until the changes are applied to the main branch.

[mmenendezg]

@MadAlex1997 It seems like DTypePointer has been completely deprecated on the nightly version:

[MadAlex1997]

@mmenendezg They have reverted things of that scale in the main updates before. Regardless we need them to decide what the API for SIMD data loading is, as there is still a debate between SIMD[width=n].load(UnsafePointer,i) and UnsafePointer.load[width=n](i).

We can do it correctly once instead of chasing 5 or 10 changes, each of which might take 30 minutes to multiple hours. This is why, in addition to version stability and access (ie magic being functional and easy to add packages to), until Mojo is much more stable we don't plan on making a build based on Mojo features between main releases.

We have discussed this on the Numojo Discord you are welcome to join the conversation.

[shivasankarka]

The PR #108 migrates NuMojo from Mojo 24.4 to 24.5 and uses UnsafePointer now.