include module type of struct include String endmake n c is a string of length n with each index holding the character c.
init n f is a string of length n with index i holding the character f i (called in increasing index order).
Return a new string that contains the same bytes as the given byte sequence.
Return a new byte sequence that contains the same bytes as the given string.
get s i is the character at index i in s. This is the same as writing s.[i].
Note. The Stdlib.(^) binary operator concatenates two strings.
concat sep ss concatenates the list of strings ss, inserting the separator string sep between each.
compare s0 s1 sorts s0 and s1 in lexicographical order. compare behaves like Stdlib.compare on strings but may be more efficient.
starts_with ~prefix s is true if and only if s starts with prefix.
ends_with suffix s is true if and only if s ends with suffix.
contains_from s start c is true if and only if c appears in s after position start.
rcontains_from s stop c is true if and only if c appears in s before position stop+1.
contains s c is String.contains_from s 0 c.
sub s pos len is a string of length len, containing the substring of s that starts at position pos and has length len.
split_on_char sep s is the list of all (possibly empty) substrings of s that are delimited by the character sep.
The function's result is specified by the following invariants:
sep as a separator returns a string equal to the input (concat (make 1 sep)
(split_on_char sep s) = s).sep character.map f s is the string resulting from applying f to all the characters of s in increasing order.
mapi f s is like map but the index of the character is also passed to f.
fold_left f x s computes f (... (f (f x s.[0]) s.[1]) ...) s.[n-1], where n is the length of the string s.
fold_right f s x computes f s.[0] (f s.[1] ( ... (f s.[n-1] x) ...)), where n is the length of the string s.
for_all p s checks if all characters in s satisfy the predicate p.
exists p s checks if at least one character of s satisfies the predicate p.
trim s is s without leading and trailing whitespace. Whitespace characters are: ' ', '\x0C' (form feed), '\n', '\r', and '\t'.
escaped s is s with special characters represented by escape sequences, following the lexical conventions of OCaml.
All characters outside the US-ASCII printable range [0x20;0x7E] are escaped, as well as backslash (0x2F) and double-quote (0x22).
The function Scanf.unescaped is a left inverse of escaped, i.e. Scanf.unescaped (escaped s) = s for any string s (unless escaped s fails).
uppercase_ascii s is s with all lowercase letters translated to uppercase, using the US-ASCII character set.
lowercase_ascii s is s with all uppercase letters translated to lowercase, using the US-ASCII character set.
capitalize_ascii s is s with the first character set to uppercase, using the US-ASCII character set.
uncapitalize_ascii s is s with the first character set to lowercase, using the US-ASCII character set.
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.[length s - 1]; ().
iteri is like iter, but the function is also given the corresponding character index.
index_from s i c is the index of the first occurrence of c in s after position i.
index_from_opt s i c is the index of the first occurrence of c in s after position i (if any).
rindex_from s i c is the index of the last occurrence of c in s before position i+1.
rindex_from_opt s i c is the index of the last occurrence of c in s before position i+1 (if any).
index s c is String.index_from s 0 c.
index_opt s c is String.index_from_opt s 0 c.
rindex s c is String.rindex_from s (length s - 1) c.
rindex_opt s c is String.rindex_from_opt s (length s - 1) c.
to_seq s is a sequence made of the string's characters in increasing order. In "unsafe-string" mode, modifications of the string during iteration will be reflected in the sequence.
to_seqi s is like to_seq but also tuples the corresponding index.
create n returns a fresh byte sequence of length n. The sequence is uninitialized and contains arbitrary bytes.
set s n c modifies byte sequence s in place, replacing the byte at index n with c. You can also write s.[n] <- c instead of set s n c.
blit src src_pos dst dst_pos len copies len bytes from the string src, starting at index src_pos, to byte sequence dst, starting at character number dst_pos.
fill s pos len c modifies byte sequence s in place, replacing len bytes by c, starting at pos.
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.
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.
Return a copy of the argument, with the first character set to uppercase, using the ISO Latin-1 (8859-1) character set..
Return a copy of the argument, with the first character set to lowercase, using the ISO Latin-1 (8859-1) character set.
The functions in this section binary decode integers from strings.
All following functions raise Invalid_argument if the characters needed at index i to decode the integer are not available.
Little-endian (resp. big-endian) encoding means that least (resp. most) significant bytes are stored first. Big-endian is also known as network byte order. Native-endian encoding is either little-endian or big-endian depending on Sys.big_endian.
32-bit and 64-bit integers are represented by the int32 and int64 types, which can be interpreted either as signed or unsigned numbers.
8-bit and 16-bit integers are represented by the int type, which has more bits than the binary encoding. These extra bits are sign-extended (or zero-extended) for functions which decode 8-bit or 16-bit integers and represented them with int values.
get_uint8 b i is b's unsigned 8-bit integer starting at character index i.
get_int8 b i is b's signed 8-bit integer starting at character index i.
get_uint16_ne b i is b's native-endian unsigned 16-bit integer starting at character index i.
get_uint16_be b i is b's big-endian unsigned 16-bit integer starting at character index i.
get_uint16_le b i is b's little-endian unsigned 16-bit integer starting at character index i.
get_int16_ne b i is b's native-endian signed 16-bit integer starting at character index i.
get_int16_be b i is b's big-endian signed 16-bit integer starting at character index i.
get_int16_le b i is b's little-endian signed 16-bit integer starting at character index i.
get_int32_ne b i is b's native-endian 32-bit integer starting at character index i.
get_int32_be b i is b's big-endian 32-bit integer starting at character index i.
get_int32_le b i is b's little-endian 32-bit integer starting at character index i.
get_int64_ne b i is b's native-endian 64-bit integer starting at character index i.
get_int64_be b i is b's big-endian 64-bit integer starting at character index i.