package dum

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dum
- Dum

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This module dumps arbitrary OCaml values into a human-readable format and always terminates.

Dum was derived from both the Size module and from the Std.dump function of Extlib formerly known as Dumper.

The output format is not formally defined and is meant only to be inspected by humans. The basic conventions (subject to change) are the following:

parentheses (...) delimit blocks such as tuples or anything equivalent.
square brackets [...] delimit a chain of blocks that is compatible with the structure of a finite list, i.e. [ 1 2 3 ] is the same as (1 (2 (3 0))).
angle brackets <...> delimit something that is not shown in depth for some reason.
the number sign # followed by a number denotes a reference to a shared value, e.g. #0: (1 (2 #0)) can be obtained with let rec l = 1 :: 2 :: l in Dum.p l.
the regular OCaml array notation [|...|] is reserved to unboxed arrays of floats.

The rest is self-explanatory.

val default_lim : int Stdlib.ref

Default limit of the number of nodes to dump: 100. Strings account for one eighth of their length.

val default_show_lazy : bool Stdlib.ref

Whether to inspect lazy values. This is false by default.

Warning: this relies on unofficially documented material of the standard distribution (file lazy.ml) and lazy values altogether are an experimental feature of OCaml.

This functionality may disappear in the future.

val to_eformat : ?show_lazy:bool -> ?lim:int -> 'a -> Easy_format.t

Convert any OCaml value into an Easy_format.t tree.

val to_string : ?show_lazy:bool -> ?lim:int -> 'a -> string

val p : ?show_lazy:bool -> ?lim:int -> 'a -> string

Dump to a string. Dum.to_string and Dum.p are equivalent.

val to_stdout : ?show_lazy:bool -> ?lim:int -> 'a -> unit

Dump to stdout.

val to_stderr : ?show_lazy:bool -> ?lim:int -> 'a -> unit

Dump to stderr.

val to_channel : 
  ?show_lazy:bool ->
  ?lim:int ->
  Stdlib.out_channel ->
  'a ->
  unit

Dump to the specified out_channel

val to_formatter : 
  ?show_lazy:bool ->
  ?lim:int ->
  Stdlib.Format.formatter ->
  'a ->
  unit

Dump to a formatter created by the Format module.

val to_buffer : ?show_lazy:bool -> ?lim:int -> Stdlib.Buffer.t -> 'a -> unit

Dump to a buffer.