Ops.first: def of near-v-framework@0.4.0.0
Import: import near-v-framework@0.4.0.0/general/rose/ops.bend as Ops
Lines 19-25 of near-v-framework@0.4.0.0/general/rose/ops.bend: https://jend.leeeet.dev/read.txt?path=near-v-framework@0.4.0.0/general/rose/ops.bend&start_line=19&end_line=25

import Base

# The first key of a list, "" for none.
def first(xs: List<&2, String>) -> String:
  match xs:
    case []:
      ""
    case x <> _:
      x

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