BatOptParse.StdOpt
This module contains various standard options.
val store_const : ?default:'a -> 'a -> 'a Opt.t
store_const ?default const
returns a flag option which stores the constant value const
when the option is encountered on the command line.
val store_true : unit -> bool Opt.t
store_true ()
returns an option which is set to true when it is encountered on the command line. The default value is false.
val store_false : unit -> bool Opt.t
store_false ()
returns an option which is set to false when it is encountered on the command line. The default value is true.
Create a counting option which increments its value each time the option is encountered on the command line.
Exactly identical to count_option ~dest:dest ~increment:1 ()
.
Exactly identical to count_option ~dest:dest ~increment:(-1) ()
.
val int_option : ?default:int -> ?metavar:string -> unit -> int Opt.t
int_option ?default ?metavar ()
returns an option which takes a single integer argument. If ~default
is given it is the default value returned when the option has not been encountered on the command line.
val float_option : ?default:float -> ?metavar:string -> unit -> float Opt.t
See OptParse
.StdOpt.int_option.
val str_option : ?default:string -> ?metavar:string -> unit -> string Opt.t
See OptParse
.StdOpt.int_option.
val any_option : ?default:'a option -> ?metavar:string -> (string -> 'a) -> 'a Opt.t
any_option ?default ?metavar coerce
returns an option which takes a single argument from the command line and calls coerce
to coerce it to the proper type.
default
is the default value of the option. If None
, the option has no default value.
val int_callback : ?metavar:string -> (int -> unit) -> unit Opt.t
int_callback ?metavar f
returns an option which takes a single integer argument and calls f
with that argument when encountered on the command line.
val float_callback : ?metavar:string -> (float -> unit) -> unit Opt.t
See OptParse
.StdOpt.int_callback.
val str_callback : ?metavar:string -> (string -> unit) -> unit Opt.t
See OptParse
.StdOpt.int_callback.
val help_option : unit -> 'a Opt.t
help_option ()
returns the standard help option which displays a usage message and exits the program when encountered on the command line.
val version_option : (unit -> string) -> 'a Opt.t
version_option f
returns the standard version option which displays the string returned by f ()
(and nothing else) on standard output and exits.