TraversalCellsRefinement.observe_gather: def of stelliferous@0.0.2.0
Import: import stelliferous@0.0.2.0/proofs/traversal_cells_refinement.bend as TraversalCellsRefinement
Lines 61-63 of stelliferous@0.0.2.0/proofs/traversal_cells_refinement.bend: https://jend.leeeet.dev/read.txt?path=stelliferous@0.0.2.0/proofs/traversal_cells_refinement.bend&start_line=61&end_line=63

import Base

def observe_gather(~Owner: Type,~Model: Type,~Cell: Data,~project: Owner -> Model,result: Owner & Cell) -> Model & Cell:
  (owner,cell) = result
  (project(owner),cell)

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma