Visgraph.by_source: def of bend-visgraph@2.0.0.0
Import: import bend-visgraph@2.0.0.0/visgraph.bend as Visgraph
Lines 954-969 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=954&end_line=969

import Base

# The half edges from position `p` on, in target order, into their
# sources' rows.
def by_source(count: Nat, +p: U32, ur: Array<U32> & U32, vr: Array<U32> & U32, wr: Array<F32> & F32, out: Rows) -> Rows:
  match count:
    case 0n:
      (us, u) = ur
      (vs, v) = vr
      (ws, w) = wr
      out
    case 1n+k:
      (us, +u) = ur
      (vs, +v) = vr
      (ws, +w) = wr
      Rows{cur, targets, weights} = out
      +p2 = (p + 1 : U32)
      by_source(k, p2, Array.get(U32, us, p2), Array.get(U32, vs, p2), Array.get(F32, ws, p2), put_row(u, v, w, Array.get(U32, cur, u), targets, weights))

Uses (10):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array.get
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=bend-visgraph@2.0.0.0/visgraph.bend&name=Rows
  https://jend.leeeet.dev/definition.txt?path=bend-visgraph@2.0.0.0/visgraph.bend&name=put_row