Compose.own.step: def of yaml-for-bend@0.1.1.0
Import: import yaml-for-bend@0.1.1.0/compose.bend as Compose
Lines 232-240 of yaml-for-bend@0.1.1.0/compose.bend: https://jend.leeeet.dev/read.txt?path=yaml-for-bend@0.1.1.0/compose.bend&start_line=232&end_line=240

import Base

def own.step(r: Result<&2, &2, String, Ord>, +k: Item, v: Item) -> Result<&2, &2, String, Ord>:
  match r:
    case Fail{e}:
      Fail{e}
    case Done{+o}:
      +key = item.val(k)
      when(Result<&2, &2, String, Ord>, item.merge(k), u => Done{o},
        u => when(Result<&2, &2, String, Ord>, ord.has(o, key), u => Fail{"found a duplicate key: " ++ key.text(key)},
          u => Done{ord.put(o, key, item.val(v))}))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.append
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/compose.bend&name=Item
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/compose.bend&name=Ord
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/compose.bend&name=item.merge
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/compose.bend&name=item.val
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/compose.bend&name=key.text
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/compose.bend&name=ord.has
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/compose.bend&name=ord.put
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/compose.bend&name=when