core.univ_map
Univ_map.With_default
keys with associated default values, so that find is no longer partial
find
core
core.base_for_tests
core.command
core.filename_base
core.heap_block
core.top
core.validate
module Key : sig ... end
val set : t -> key:'a Key.t -> data:'a -> t
val find : t -> 'a Key.t -> 'a
val change : t -> 'a Key.t -> f:('a -> 'a) -> t