package arrayjit
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md5=529f0921963a6eee0194159a9c0fea41
sha512=fc16e8b6cd72cb2ae18277b3727d065fa6c1d137e3187f9586fb0bfe7edeb45597cb58f389e79c20d7e3ae80661e6f9f20e0b95dcbbf27ee5688bcc571d395dd
doc/arrayjit.utils/Utils/Lazy/index.html
Module Utils.LazySource
include module type of struct include Base.Lazy end
val hash_fold_t :
(Base.Hash.state -> 'a -> Base.Hash.state) ->
Base.Hash.state ->
'a t ->
Base.Hash.stateinclude Sexplib0.Sexpable.S1 with type 'a t := 'a t
include Base.Monad.S with type 'a t := 'a t
t >>= f returns a computation that sequences the computations represented by two monad elements. The resulting computation first does t to yield a value v, and then runs the computation returned by f v.
ignore_m t is map t ~f:(fun _ -> ()). ignore_m used to be called ignore, but we decided that was a bad name, because it shadowed the widely used Stdlib.ignore. Some monads still do let ignore = ignore_m for historical reasons.
Like all, but ensures that every monadic value in the list produces a unit value, all of which are discarded rather than being collected into a list.
force x forces the suspension x and returns its result. If x has already been forced, Lazy.force x returns the same value again without recomputing it. If it raised an exception, the same exception is raised again. Raise Undefined if the forcing of x tries to force x itself recursively.
Like force except that force_val x does not use an exception handler, so it may be more efficient. However, if the computation of x raises an exception, it is unspecified whether force_val x raises the same exception or Undefined.
from_fun f is the same as lazy (f ()) but slightly more efficient if f is a variable. from_fun should only be used if the function f is already defined. In particular it is always less efficient to write from_fun (fun () -> expr) than lazy expr.
from_val v returns an already-forced suspension of v (where v can be any expression). Essentially, from_val expr is the same as let var = expr in lazy var.
is_val x returns true if x has already been forced and did not raise an exception.
peek x returns None if x has never been forced or Some v if x was forced to value v
This type offers a serialization function sexp_of_t that won't force its argument. Instead, it will serialize the 'a if it is available, or just use a custom string indicating it is not forced. Note that this is not a round-trippable type, thus the type does not expose of_sexp. To be used in debug code, while tracking a Heisenbug, etc.