package core_kernel

  1. Overview
  2. Docs
package core_kernel
Legend:
Library
Module
Module type
Parameter
Class
Class type

A substring is a contiguous set of characters within a string. Creating a substring does not copy. Therefore modifying the string also modifies the substring.

module type S = Substring.S
type base = bytes

The type of strings that type t is a substring of.

type t
val mem : t -> Base.Char.t -> bool
val length : t -> int
val is_empty : t -> bool
val iter : t -> f:(Base.Char.t -> unit) -> unit
val fold : t -> init:'accum -> f:('accum -> Base.Char.t -> 'accum) -> 'accum
val fold_result : t -> init:'accum -> f:('accum -> Base.Char.t -> ('accum, 'e) Base__.Result.t) -> ('accum, 'e) Base__.Result.t
val fold_until : t -> init:'accum -> f: ('accum -> Base.Char.t -> ('accum, 'final) Base__.Container_intf.Continue_or_stop.t) -> finish:('accum -> 'final) -> 'final
val exists : t -> f:(Base.Char.t -> bool) -> bool
val for_all : t -> f:(Base.Char.t -> bool) -> bool
val count : t -> f:(Base.Char.t -> bool) -> int
val sum : (module Base__.Container_intf.Summable with type t = 'sum) -> t -> f:(Base.Char.t -> 'sum) -> 'sum
val find : t -> f:(Base.Char.t -> bool) -> Base.Char.t option
val find_map : t -> f:(Base.Char.t -> 'a option) -> 'a option
val to_list : t -> Base.Char.t list
val to_array : t -> Base.Char.t array
val min_elt : t -> compare:(Base.Char.t -> Base.Char.t -> int) -> Base.Char.t option
val max_elt : t -> compare:(Base.Char.t -> Base.Char.t -> int) -> Base.Char.t option
val base : t -> base
val pos : t -> Base.Int.t

pos refers to the position in the base string, not any other substring that this substring was generated from.

val get : t -> Base.Int.t -> Base.Char.t

Per String.get and Bigstring.get, this raises an exception if the index is out of bounds.

val create : ?pos:Base.Int.t -> ?len:Base.Int.t -> base -> t

create ?pos ?len base creates a substring of the base sequence of length len starting at position pos, i.e.,

base.[pos], base.[pos + 1], ... base.[pos + len - 1]

An exception is raised if any of those indices into base is invalid.

It does not copy the characters, so mutating base mutates t and vice versa.

val sub : ?pos:Base.Int.t -> ?len:Base.Int.t -> t -> t

Blit functions

For copying characters from a substring to and from both strings and substrings.

val blit_to_string : t -> dst:Base.Bytes.t -> dst_pos:Base.Int.t -> Base.Unit.t
val blit_to_bytes : t -> dst:Base.Bytes.t -> dst_pos:Base.Int.t -> Base.Unit.t
val blit_to_bigstring : t -> dst:Bigstring.t -> dst_pos:Base.Int.t -> Base.Unit.t
val blit_from_string : t -> src:Base.String.t -> src_pos:Base.Int.t -> len:Base.Int.t -> Base.Unit.t
val blit_from_bigstring : t -> src:Bigstring.t -> src_pos:Base.Int.t -> len:Base.Int.t -> Base.Unit.t

String concatenation

These functions always copy.

val concat : t Base.List.t -> t
val concat_string : t Base.List.t -> Base.String.t
val concat_bigstring : t Base.List.t -> Bigstring.t

Conversion to/from substrings

These functions always copy.

val to_string : t -> Base.String.t
val to_bigstring : t -> Bigstring.t

These functions always copy. Use create if you want sharing.

val of_string : Base.String.t -> t
  • deprecated [since 2017-11] use [create] instead
val of_bigstring : Bigstring.t -> t
  • deprecated [since 2017-11] use [create] instead

Prefixes and suffixes

The result of these functions share data with their input, but don't mutate the underlying string.

val drop_prefix : t -> Base.Int.t -> t
val drop_suffix : t -> Base.Int.t -> t
val prefix : t -> Base.Int.t -> t
val suffix : t -> Base.Int.t -> t
OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct