A timing-wheel alarm used to implement a time-dependent incremental: at, at_intervals, snapshot, step_function.
at
at_intervals
snapshot
step_function
type t
= Incremental_kernel__.Types.Alarm.t
include sig ... end
val sexp_of_t : t ‑> Base.Sexp.t
include Core_kernel.Invariant.S with type t := t
val invariant : t Base__.Invariant_intf.inv
val null : t