Library
Module
Module type
Parameter
Class
Class type
Base functions.
Same as Lwt.both
, but immediately propagate exceptions.
More precisely, if one of the two promises is rejected or canceled, cancel the other promise and reject the resulting promise immediately with the original exception.
val return : 'a -> 'a Lwt.t
Same as Lwt.return
.
val unit : unit Lwt.t
Same as Lwt.return_unit
.
val none : 'a option Lwt.t
Same as Lwt.return_none
.
val some : 'a -> 'a option Lwt.t
Same as Lwt.return_some
.
Make a list of all integers between two integers.
If the first argument is greater than the second argument, return the empty list.
Backport of List.find_map
from OCaml 4.10.
take n l
returns the first n
elements of l
if longer than n
, else l
itself.
val rex : string -> rex
Compile a regular expression using Perl syntax.
val show_rex : rex -> string
Convert a regular expression to a string using Perl syntax.
val (=~) : string -> rex -> bool
Test whether a string matches a regular expression.
Example: "number 1234 matches" =~ rex "\\d+"
val (=~!) : string -> rex -> bool
Negation of =~
.
val (=~*) : string -> rex -> string option
Match a regular expression with one capture group.
val (=~**) : string -> rex -> (string * string) option
Match a regular expression with two capture groups.
val replace_string :
?pos:int ->
?len:int ->
?all:bool ->
rex ->
by:string ->
string ->
string
replace_string ~all rex ~by s
iterates on s
, and replaces every occurrence of rex
with by
. If all = false
, then only the first occurrence of rex
is replaced.
Open file, use function to write output then close the output. In case of error while writing, the channel is closed before raising the exception
Open file, use function to read input then close the input. In case of error while reading, the channel is closed before raising the exception *
val read_file : string -> string Lwt.t
read_file filename
returns the full contents of file filename