Char(3o) OCaml library Char(3o)NAME
Char - Character operations.
Module
Module Char
Documentation
Module Char
: sig end
Character operations.
val code : char -> int
Return the ASCII code of the argument.
val chr : int -> char
Return the character with the given ASCII code. Raise Invalid_argument Char.chr if the argument is outside the range 0--255.
val escaped : char -> string
Return a string representing the given character, with special characters escaped following the lexical conventions of Objective Caml.
val lowercase : char -> char
Convert the given character to its equivalent lowercase character.
val uppercase : char -> char
Convert the given character to its equivalent uppercase character.
type t = char
An alias for the type of characters.
val compare : t -> t -> int
The comparison function for characters, with the same specification as Pervasives.compare . Along with the type t , this function compare
allows the module Char to be passed as argument to the functors Set.Make and Map.Make .
OCamldoc 2012-06-26 Char(3o)
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StringLabels(3o) OCaml library StringLabels(3o)NAME
StringLabels - String operations.
Module
Module StringLabels
Documentation
Module StringLabels
: sig end
String operations.
val length : string -> int
Return the length (number of characters) of the given string.
val get : string -> int -> char
String.get s n returns character number n in string s . The first character is character number 0. The last character is character number
String.length s - 1 . You can also write s.[n] instead of String.get s n .
Raise Invalid_argument index out of bounds if n is outside the range 0 to (String.length s - 1) .
val set : string -> int -> char -> unit
String.set s n c modifies string s in place, replacing the character number n by c . You can also write s.[n] <- c instead of String.set s
n c . Raise Invalid_argument index out of bounds if n is outside the range 0 to (String.length s - 1) .
val create : int -> string
String.create n returns a fresh string of length n . The string initially contains arbitrary characters. Raise Invalid_argument if n < 0
or n > Sys.max_string_length .
val make : int -> char -> string
String.make n c returns a fresh string of length n , filled with the character c . Raise Invalid_argument if n < 0 or n >
Sys.max_string_length .
val copy : string -> string
Return a copy of the given string.
val sub : string -> pos:int -> len:int -> string
String.sub s start len returns a fresh string of length len , containing the characters number start to start + len - 1 of string s .
Raise Invalid_argument if start and len do not designate a valid substring of s ; that is, if start < 0 , or len < 0 , or start + len >
StringLabels.length s .
val fill : string -> pos:int -> len:int -> char -> unit
String.fill s start len c modifies string s in place, replacing the characters number start to start + len - 1 by c . Raise Invalid_argu-
ment if start and len do not designate a valid substring of s .
val blit : src:string -> src_pos:int -> dst:string -> dst_pos:int -> len:int -> unit
String.blit src srcoff dst dstoff len copies len characters from string src , starting at character number srcoff , to string dst , start-
ing at character number dstoff . It works correctly even if src and dst are the same string, and the source and destination chunks overlap.
Raise Invalid_argument if srcoff and len do not designate a valid substring of src , or if dstoff and len do not designate a valid sub-
string of dst .
val concat : sep:string -> string list -> string
String.concat sep sl concatenates the list of strings sl , inserting the separator string sep between each.
val iter : f:(char -> unit) -> string -> unit
String.iter f s applies function f in turn to all the characters of s . It is equivalent to f s.[0]; f s.[1]; ...; f s.[String.length s -
1]; () .
val escaped : string -> string
Return a copy of the argument, with special characters represented by escape sequences, following the lexical conventions of Objective
Caml. If there is no special character in the argument, return the original string itself, not a copy.
val index : string -> char -> int
String.index s c returns the position of the leftmost occurrence of character c in string s . Raise Not_found if c does not occur in s .
val rindex : string -> char -> int
String.rindex s c returns the position of the rightmost occurrence of character c in string s . Raise Not_found if c does not occur in s .
val index_from : string -> int -> char -> int
Same as StringLabels.index , but start searching at the character position given as second argument. String.index s c is equivalent to
String.index_from s 0 c .
val rindex_from : string -> int -> char -> int
Same as StringLabels.rindex , but start searching at the character position given as second argument. String.rindex s c is equivalent to
String.rindex_from s (String.length s - 1) c .
val contains : string -> char -> bool
String.contains s c tests if character c appears in the string s .
val contains_from : string -> int -> char -> bool
String.contains_from s start c tests if character c appears in the substring of s starting from start to the end of s . Raise
Invalid_argument if start is not a valid index of s .
val rcontains_from : string -> int -> char -> bool
String.rcontains_from s stop c tests if character c appears in the substring of s starting from the beginning of s to index stop . Raise
Invalid_argument if stop is not a valid index of s .
val uppercase : string -> string
Return a copy of the argument, with all lowercase letters translated to uppercase, including accented letters of the ISO Latin-1 (8859-1)
character set.
val lowercase : string -> string
Return a copy of the argument, with all uppercase letters translated to lowercase, including accented letters of the ISO Latin-1 (8859-1)
character set.
val capitalize : string -> string
Return a copy of the argument, with the first character set to uppercase.
val uncapitalize : string -> string
Return a copy of the argument, with the first character set to lowercase.
type t = string
An alias for the type of strings.
val compare : t -> t -> int
The comparison function for strings, with the same specification as Pervasives.compare . Along with the type t , this function compare
allows the module String to be passed as argument to the functors Set.Make and Map.Make .
OCamldoc 2012-06-26 StringLabels(3o)