package core

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Option.t is like t option, except that the value is immediate. This module should mainly be used to avoid allocations.

Option.t is like t option, except that the value is immediate. This module should mainly be used to avoid allocations.

include Core_kernel.Immediate_option.Int63 with type value := Time_ns.t
type t = private Base.Int63.t

Represents value option using immediate in order to avoid allocating a Some tag. Exports the representation so the compiler can optimize t as an immediate type, assuming immediate is known to be immediate. The interface does not enforce that immediate is immediate because some types, like Int63.t, are only immediate on 64-bit platforms.

include sig ... end
val typerep_of_t : t Typerep_lib.Std.Typerep.t
val typename_of_t : t Typerep_lib.Std.Typename.t
val none : t

Constructors analogous to None and Some.

val some : Time_ns.t -> t
val is_none : t -> Base.Bool.t
val is_some : t -> Base.Bool.t
val value : t -> default:Time_ns.t -> Time_ns.t

value (some x) ~default = x and value none ~default = default.

val value_exn : t -> Time_ns.t

value_exn (some x) = x. value_exn none raises. Unlike Option.value_exn, there is no ?message argument, so that calls to value_exn that do not raise also do not have to allocate.

val unchecked_value : t -> Time_ns.t

unchecked_value (some x) = x. unchecked_value none returns an unspecified value. unchecked_value t is intended as an optimization of value_exn t when is_some t is known to be true.

val to_option : t -> Time_ns.t Base.Option.t
val of_option : Time_ns.t Base.Option.t -> t
module Optional_syntax : sig ... end

Provides bindings used by the match%optional ppx transformer. Example:

include Core_kernel.Identifiable with type t := t
include sig ... end
val bin_read_t : t Bin_prot.Read.reader
val __bin_read_t__ : (Base.Int.t -> t) Bin_prot.Read.reader
val bin_reader_t : t Bin_prot.Type_class.reader
val bin_size_t : t Bin_prot.Size.sizer
val bin_write_t : t Bin_prot.Write.writer
val bin_writer_t : t Bin_prot.Type_class.writer
val bin_shape_t : Bin_prot.Shape.t
val t_of_sexp : Sexplib.Sexp.t -> t
val sexp_of_t : t -> Sexplib.Sexp.t
include Base.Stringable.S with type t := t
val of_string : string -> t
val to_string : t -> string
include Core_kernel.Comparable.S_binable with type t := t
include Base.Comparable_intf.S with type t := t
include Base.Comparable_intf.Polymorphic_compare with type t := t
include Base.Polymorphic_compare_intf.Infix with type t := t
val (>=) : t -> t -> bool
val (<=) : t -> t -> bool
val (=) : t -> t -> bool
val (>) : t -> t -> bool
val (<) : t -> t -> bool
val (<>) : t -> t -> bool
val equal : t -> t -> bool
val compare : t -> t -> int

-1 means "less than", 0 means "equal", 1 means "greater than", and other values should not be returned

val min : t -> t -> t
val max : t -> t -> t
val ascending : t -> t -> int

ascending is identical to compare. descending x y = ascending y x. These are intended to be mnemonic when used like List.sort ~cmp:ascending and List.sort ~cmp:descending, since they cause the list to be sorted in ascending or descending order, respectively.

val descending : t -> t -> int
val between : t -> low:t -> high:t -> bool
val clamp_exn : t -> min:t -> max:t -> t

clamp_exn t ~min ~max returns t', the closest value to t such that between t' ~low:min ~high:max is true.

Raises if not (min <= max).

val clamp : t -> min:t -> max:t -> t Base.Or_error.t
include Base.Comparator.S with type t := t
type comparator_witness
include Base.Comparable_intf.Validate with type t := t
val validate_lbound : min:t Base.Maybe_bound.t -> t Base.Validate.check
val validate_ubound : max:t Base.Maybe_bound.t -> t Base.Validate.check
val validate_bound : min:t Base.Maybe_bound.t -> max:t Base.Maybe_bound.t -> t Base.Validate.check
include Base.Pretty_printer.S with type t := t
val pp : Caml.Format.formatter -> t -> unit
module Stable : sig ... end
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