package core_kernel
Industrial strength alternative to OCaml's standard library
Install
Dune Dependency
Authors
Maintainers
Sources
v0.14.2.tar.gz
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doc/core_kernel.balanced_reducer/Balanced_reducer/index.html
Module Balanced_reducer
A Balanced_reducer.t
stores a mutable fixed-length sequence of optional values, and incrementally maintains the result of folding an associative operation (reduce
) over the sequence as its elements change.
val sexp_of_t :
('a -> Ppx_sexp_conv_lib.Sexp.t) ->
'a t ->
Ppx_sexp_conv_lib.Sexp.t
include Base.Invariant.S1 with type 'a t := 'a t
val invariant : ('a -> unit) -> 'a t -> unit
val create_exn :
?sexp_of_a:('a -> Base.Sexp.t) ->
Base.unit ->
len:Base.int ->
reduce:('a -> 'a -> 'a) ->
'a t
create_exn ~len ~reduce
creates a balanced reducer of length len
, all of whose elements are None
. It raises if len < 1
.
set_exn t i a
updates the value at index i
to Some a
. It raises if i
is out of bounds.
get_exn t i
gets the value at index i
. It raises if i
is out of bounds, or set_exn t i
has never been called.
val compute_exn : 'a t -> 'a
compute_exn t
computes the value of the fold. It raises if any values of the array are None
.
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