Ops.around: def of near-v-framework@0.4.0.0
Import: import near-v-framework@0.4.0.0/domain/architecture/view/ops.bend as Ops
Lines 180-189 of near-v-framework@0.4.0.0/domain/architecture/view/ops.bend: https://jend.leeeet.dev/read.txt?path=near-v-framework@0.4.0.0/domain/architecture/view/ops.bend&start_line=180&end_line=189

import Base
import near-v-framework@0.4.0.0/general/compound/ops.bend as CO
import near-v-framework@0.4.0.0/general/compound/edge/type.bend as E

# The keys around the view's own: whatever its edges reach, once each.
def around(es: List<&2, E.Edge>, +ins: List<&2, String>, +seen: List<&2, String>) -> List<&2, String>:
  match es:
    case []:
      []
    case e <> rest:
      match e:
        case E.Edge{+x, +y, _, _}:
          keep_new(Bool.not(CO.has(ins, x) || CO.has(seen, x)), x,
            keep_new(Bool.not(CO.has(ins, y) || CO.has(x <> seen, y) || String.eq(x, y)), y, around(rest, ins, x <> y <> seen)))

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.eq
  https://jend.leeeet.dev/definition.txt?path=near-v-framework@0.4.0.0/domain/architecture/view/ops.bend&name=keep_new
  https://jend.leeeet.dev/definition.txt?path=near-v-framework@0.4.0.0/general/compound/edge/type.bend&name=Edge
  https://jend.leeeet.dev/definition.txt?path=near-v-framework@0.4.0.0/general/compound/ops.bend&name=has