OrdinaryConditionDeclaration.lookup: def of bendvy-ecs-core@0.1.0.4
Import: import bendvy-ecs-core@0.1.0.4/ordinary_condition_declaration.bend as OrdinaryConditionDeclaration
Lines 91-97 of bendvy-ecs-core@0.1.0.4/ordinary_condition_declaration.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.4/ordinary_condition_declaration.bend&start_line=91&end_line=97

import Base

# Detached name lookup by Nat position, returning None outside the list.
# Names are descriptive; finding one supplies no execution authority.
def lookup(names:List<&2,String>,index:Nat) -> Maybe<&2,String>:
  match names index:
    case [] _:None{}
    case first <> _ 0n:Some{first}
    case _ <> rest 1n+prior:lookup(rest,prior)

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String