Visgraph.fold.edges: def of bend-visgraph@2.0.0.0
Import: import bend-visgraph@2.0.0.0/visgraph.bend as Visgraph
Lines 855-864 of bend-visgraph@2.0.0.0/visgraph.bend: https://jend.leeeet.dev/read.txt?path=bend-visgraph@2.0.0.0/visgraph.bend&start_line=855&end_line=864

import Base

# `f(acc, src, dst, w)` over every edge of `g`, in the order the rope
# holds them, from `acc`.
def fold.edges(~A: Type, ~f: A -> U32 -> U32 -> F32 -> A, es: Edges, acc: A) -> A:
  match es:
    case ENil{}:
      acc
    case ECon{s, t, w, next}:
      fold.edges(~A, ~f, next, f(acc, s, t, w))
    case EJoin{a, b}:
      fold.edges(~A, ~f, b, fold.edges(~A, ~f, a, acc))

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-visgraph@2.0.0.0/visgraph.bend&name=Edges