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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_argument 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 , starting 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 substring 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 .