centre(String,Number)->Centeredcentre(String,Number,Character)->Centered
Types:
String = Centered = string()
Number = integer() >= 0
Character = char()
Returns a string, where String is centered in the string and surrounded by blanks or Character.
The resulting string has length Number.
This function is obsolete. Use pad/3.
chars(Character,Number)->Stringchars(Character,Number,Tail)->String
Types:
Character = char()
Number = integer() >= 0
Tail = String = string()
Returns a string consisting of Number characters Character. Optionally, the string can end with
string Tail.
This function is obsolete. Use lists:duplicate/2.
chr(String,Character)->Index
Types:
String = string()
Character = char()
Index = integer() >= 0
Returns the index of the first occurrence of Character in String. Returns 0 if Character does not
occur.
This function is obsolete. Use find/2.
concat(String1,String2)->String3
Types:
String1 = String2 = String3 = string()
Concatenates String1 and String2 to form a new string String3, which is returned.
This function is obsolete. Use [String1,String2] as Data argument, and call
unicode:characters_to_list/2 or unicode:characters_to_binary/2 to flatten the output.
copies(String,Number)->Copies
Types:
String = Copies = string()
Number = integer() >= 0
Returns a string containing String repeated Number times.
This function is obsolete. Use lists:duplicate/2.
cspan(String,Chars)->Length
Types:
String = Chars = string()
Length = integer() >= 0
Returns the length of the maximum initial segment of String, which consists entirely of characters
not from Chars.
This function is obsolete. Use take/3.
Example:
> string:cspan("\t abcdef", " \t").
0
join(StringList,Separator)->String
Types:
StringList = [string()]
Separator = String = string()
Returns a string with the elements of StringList separated by the string in Separator.
This function is obsolete. Use lists:join/2.
Example:
> join(["one", "two", "three"], ", ").
"one, two, three"
left(String,Number)->Leftleft(String,Number,Character)->Left
Types:
String = Left = string()
Number = integer() >= 0
Character = char()
Returns String with the length adjusted in accordance with Number. The left margin is fixed. If
length(String) < Number, then String is padded with blanks or Characters.
This function is obsolete. Use pad/2 or pad/3.
Example:
> string:left("Hello",10,$.).
"Hello....."
len(String)->Length
Types:
String = string()
Length = integer() >= 0
Returns the number of characters in String.
This function is obsolete. Use length/1.
rchr(String,Character)->Index
Types:
String = string()
Character = char()
Index = integer() >= 0
Returns the index of the last occurrence of Character in String. Returns 0 if Character does not
occur.
This function is obsolete. Use find/3.
right(String,Number)->Rightright(String,Number,Character)->Right
Types:
String = Right = string()
Number = integer() >= 0
Character = char()
Returns String with the length adjusted in accordance with Number. The right margin is fixed. If
the length of (String) < Number, then String is padded with blanks or Characters.
This function is obsolete. Use pad/3.
Example:
> string:right("Hello", 10, $.).
".....Hello"
rstr(String,SubString)->Index
Types:
String = SubString = string()
Index = integer() >= 0
Returns the position where the last occurrence of SubString begins in String. Returns 0 if
SubString does not exist in String.
This function is obsolete. Use find/3.
Example:
> string:rstr(" Hello Hello World World ", "Hello World").
8
span(String,Chars)->Length
Types:
String = Chars = string()
Length = integer() >= 0
Returns the length of the maximum initial segment of String, which consists entirely of characters
from Chars.
This function is obsolete. Use take/2.
Example:
> string:span("\t abcdef", " \t").
5
str(String,SubString)->Index
Types:
String = SubString = string()
Index = integer() >= 0
Returns the position where the first occurrence of SubString begins in String. Returns 0 if
SubString does not exist in String.
This function is obsolete. Use find/2.
Example:
> string:str(" Hello Hello World World ", "Hello World").
8
strip(String::string())->string()strip(String,Direction)->Strippedstrip(String,Direction,Character)->Stripped
Types:
String = Stripped = string()
Direction = left | right | both
Character = char()
Returns a string, where leading or trailing, or both, blanks or a number of Character have been
removed. Direction, which can be left, right, or both, indicates from which direction blanks are
to be removed. strip/1 is equivalent to strip(String,both).
This function is obsolete. Use trim/3.
Example:
> string:strip("...Hello.....", both, $.).
"Hello"
sub_string(String,Start)->SubStringsub_string(String,Start,Stop)->SubString
Types:
String = SubString = string()
Start = Stop = integer() >= 1
Returns a substring of String, starting at position Start to the end of the string, or to and
including position Stop.
This function is obsolete. Use slice/3.
Example:
sub_string("Hello World", 4, 8).
"lo Wo"
substr(String,Start)->SubStringsubstr(String,Start,Length)->SubString
Types:
String = SubString = string()
Start = integer() >= 1
Length = integer() >= 0
Returns a substring of String, starting at position Start, and ending at the end of the string or
at length Length.
This function is obsolete. Use slice/3.
Example:
> substr("Hello World", 4, 5).
"lo Wo"
sub_word(String,Number)->Wordsub_word(String,Number,Character)->Word
Types:
String = Word = string()
Number = integer()
Character = char()
Returns the word in position Number of String. Words are separated by blanks or Characters.
This function is obsolete. Use nth_lexeme/3.
Example:
> string:sub_word(" Hello old boy !",3,$o).
"ld b"
to_lower(String)->Resultto_lower(Char)->CharResultto_upper(String)->Resultto_upper(Char)->CharResult
Types:
String = Result = io_lib:latin1_string()
Char = CharResult = char()
The specified string or character is case-converted. Notice that the supported character set is
ISO/IEC 8859-1 (also called Latin 1); all values outside this set are unchanged
This function is obsolete use lowercase/1, uppercase/1, titlecase/1 or casefold/1.
tokens(String,SeparatorList)->Tokens
Types:
String = SeparatorList = string()
Tokens = [Token :: nonempty_string()]
Returns a list of tokens in String, separated by the characters in SeparatorList.
Example:
> tokens("abc defxxghix jkl", "x ").
["abc", "def", "ghi", "jkl"]
Notice that, as shown in this example, two or more adjacent separator characters in String are
treated as one. That is, there are no empty strings in the resulting list of tokens.
This function is obsolete. Use lexemes/2.
words(String)->Countwords(String,Character)->Count
Types:
String = string()
Character = char()
Count = integer() >= 1
Returns the number of words in String, separated by blanks or Character.
This function is obsolete. Use lexemes/2.
Example:
> words(" Hello old boy!", $o).
4
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