List.head: def of Base
Import: import Base
Lines 964-969 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=964&end_line=969

import Base

def List.head(a, -A: Kind(a), xs: List<a, A>) -> Maybe<a, A>:
  match xs:
    case Nil{}:
      None{}
    case h <> t:
      Some{h}

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=Maybe