Fold.foldable: def of bend-toon-codec@0.1.0.0
Import: import bend-toon-codec@0.1.0.0/src/fold.bend as Fold
Lines 137-139 of bend-toon-codec@0.1.0.0/src/fold.bend: https://jend.leeeet.dev/read.txt?path=bend-toon-codec@0.1.0.0/src/fold.bend&start_line=137&end_line=139

import Base

# Does this field fold?
def foldable(+c: Ci, +sibs: List<&2, String>, +prefix: String, +rl: List<&2, String>) -> Bool:
  U32.is_ge(ci.n(c), 2) && ci.ok(c) && Bool.not(member(ci.key(c), sibs)) && Bool.not(member(path(prefix, ci.key(c)), rl))

Uses (12):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_ge
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/fold.bend&name=Ci
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/fold.bend&name=ci.key
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/fold.bend&name=ci.n
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/fold.bend&name=ci.ok
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/fold.bend&name=member
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/fold.bend&name=path