Protocol.hdr.of: def of bendonnect-rpc@0.1.0.0
Import: import bendonnect-rpc@0.1.0.0/src/protocol.bend as Protocol
Lines 131-137 of bendonnect-rpc@0.1.0.0/src/protocol.bend: https://jend.leeeet.dev/read.txt?path=bendonnect-rpc@0.1.0.0/src/protocol.bend&start_line=131&end_line=137

import Base

def hdr.of(r: Map<&2, List<&2, String>> & List<&2, String>) -> Maybe<&2, String>:
  (m, v) = r
  match v:
    case Nil{}:
      None{}
    case Con{x, rest}:
      Some{x}

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Map
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String