Add broadcast_like?

[dcherian]

What do you think of adding da.broadcast_like(a)?

This would be equivalent to xr.broadcast(a, da)[1]

[shoyer]

Sounds good to me!

[fujiisoup]

Can it be simply da.broadcast(a) or is it confusing?

[shoyer]

Can it be simply da.broadcast(a) or is it confusing?

I think that would be a little confusing -- it's not clear whether the result should include a broadcast version of only da or also a.

[dcherian]

Yeah broadcast_like would be less confusing and the similarity to reindex_like and interp_like is really nice.

[fujiisoup]

That makes sense. Convinced.