Module String: 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.
Raise Invalid_argument if n is ouside the range
0 to (String.length s - 1).
You can also write s.[n] instead of String.get s n.
val set : string -> int -> char -> unit
-
String.set s n c modifies string s in place,
replacing the character number n by c.
Raise Invalid_argument if n is ouside the range
0 to (String.length s - 1).
You can also write s.[n] <- c instead of String.set s n c.
val create : int -> string
-
String.create n returns a fresh string of length n.
The string initially contains arbitrary characters.
val make : int -> char -> string
-
String.make n c returns a fresh string of length n,
filled with the character c.
val copy : string -> string
-
Return a copy of the given string.
val sub : string -> int -> 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 > String.length s.
val fill : string -> int -> 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 : string -> int -> string -> int -> int -> unit
-
String.blit s1 o1 s2 o2 len copies len characters
from string s1, starting at character number o1, to string s2,
starting at character number o2. It works correctly even if
s1 and s2 are the same string,
and the source and destination chunks overlap.
Raise Invalid_argument if o1 and len do not
designate a valid substring of s1, or if o2 and len do not
designate a valid substring of s2.
val concat : string -> string list -> string
-
String.concat sep sl catenates the list of strings sl,
inserting the separator string sep between each.
val escaped: string -> string
-
Return a copy of the argument, with special characters represented
by escape sequences, following the lexical conventions of
Caml Light.
val uppercase: string -> string
-
Return a copy of the argument, with all lowercase letters
translated to uppercase.
val lowercase: string -> string
-
Return a copy of the argument, with all uppercase letters
translated to lowercase.
val capitalize: string -> string
-
Return a copy of the argument, with the first letter
set to uppercase.
val uncapitalize: string -> string
-
Return a copy of the argument, with the first letter
set to lowercase.