TensorBand.only: def of stelliferous@0.0.2.0
Import: import stelliferous@0.0.2.0/tensor_band.bend as TensorBand
Lines 127-130 of stelliferous@0.0.2.0/tensor_band.bend: https://jend.leeeet.dev/read.txt?path=stelliferous@0.0.2.0/tensor_band.bend&start_line=127&end_line=130

import Base
import stelliferous@0.0.2.0/traversal_partition.bend as Partition

def only(~Left: Type,~Right: Type,tree: Partition.Tree<&1,Left,Unit>) -> Partition.Tree<&1,Paired<Left,Right>,Unit>:
  match tree:
    case Partition.Leaf{left,+first,+rows,details}: Partition.Leaf{Only{left,first,rows},first,rows,Unit{}}
    case Partition.Fork{left,right}: Partition.Fork{only(~Left,~Right,left),only(~Left,~Right,right)}

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Unit
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band.bend&name=Paired
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/traversal_partition.bend&name=Tree