BalancedSearchTree.first_key: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend as BalancedSearchTree
Lines 1212-1213 of bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend&start_line=1212&end_line=1213

import Base

def first_key(~K: Data, ~V: Data, ~cmp: K -> K -> Cmp, m: TreeMap<K, V, cmp>) -> TreeMap<K, V, cmp> & Maybe<&2, K>:
  key_id(~K, ~V, ~cmp, first_id(~K, ~V, ~cmp, m))

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Cmp
  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=bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend&name=TreeMap
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend&name=first_id
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend&name=key_id