This PR adds various block sparse operations such as indexing with Block types, which are useful for the dropzeros and splitblocks functionality introduced here: https://github.com/ITensor/ITensors.jl/pull/540.
dropzeros and splitblocks should probably be moved to NDTensors.
This PR adds various block sparse operations such as indexing with
Blocktypes, which are useful for thedropzerosandsplitblocksfunctionality introduced here: https://github.com/ITensor/ITensors.jl/pull/540.dropzerosandsplitblocksshould probably be moved to NDTensors.