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-rw-r--r--lib/stdlib/doc/src/string.xml230
1 files changed, 76 insertions, 154 deletions
diff --git a/lib/stdlib/doc/src/string.xml b/lib/stdlib/doc/src/string.xml
index de1b99a2d5..48867ffe72 100644
--- a/lib/stdlib/doc/src/string.xml
+++ b/lib/stdlib/doc/src/string.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1996</year><year>2009</year>
+ <year>1996</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -38,65 +38,46 @@
</description>
<funcs>
<func>
- <name>len(String) -> Length</name>
+ <name name="len" arity="1"/>
<fsummary>Return the length of a string</fsummary>
- <type>
- <v>String = string()</v>
- <v>Length = integer()</v>
- </type>
<desc>
<p>Returns the number of characters in the string.</p>
</desc>
</func>
<func>
- <name>equal(String1, String2) -> bool()</name>
+ <name name="equal" arity="2"/>
<fsummary>Test string equality</fsummary>
- <type>
- <v>String1 = String2 = string()</v>
- </type>
<desc>
<p>Tests whether two strings are equal. Returns <c>true</c> if
they are, otherwise <c>false</c>.</p>
</desc>
</func>
<func>
- <name>concat(String1, String2) -> String3</name>
+ <name name="concat" arity="2"/>
<fsummary>Concatenate two strings</fsummary>
- <type>
- <v>String1 = String2 = String3 = string()</v>
- </type>
<desc>
<p>Concatenates two strings to form a new string. Returns the
new string.</p>
</desc>
</func>
<func>
- <name>chr(String, Character) -> Index</name>
- <name>rchr(String, Character) -> Index</name>
+ <name name="chr" arity="2"/>
+ <name name="rchr" arity="2"/>
<fsummary>Return the index of the first/last occurrence of<c>Character</c>in <c>String</c></fsummary>
- <type>
- <v>String = string()</v>
- <v>Character = char()</v>
- <v>Index = integer()</v>
- </type>
<desc>
<p>Returns the index of the first/last occurrence of
- <c>Character</c> in <c>String</c>. <c>0</c> is returned if <c>Character</c> does not
+ <c><anno>Character</anno></c> in <c><anno>String</anno></c>. <c>0</c> is returned if <c><anno>Character</anno></c> does not
occur.</p>
</desc>
</func>
<func>
- <name>str(String, SubString) -> Index</name>
- <name>rstr(String, SubString) -> Index</name>
+ <name name="str" arity="2"/>
+ <name name="rstr" arity="2"/>
<fsummary>Find the index of a substring</fsummary>
- <type>
- <v>String = SubString = string()</v>
- <v>Index = integer()</v>
- </type>
<desc>
<p>Returns the position where the first/last occurrence of
- <c>SubString</c> begins in <c>String</c>. <c>0</c> is returned if <c>SubString</c>
- does not exist in <c>String</c>.
+ <c><anno>SubString</anno></c> begins in <c><anno>String</anno></c>. <c>0</c> is returned if <c><anno>SubString</anno></c>
+ does not exist in <c><anno>String</anno></c>.
For example:</p>
<code type="none">
> string:str(" Hello Hello World World ", "Hello World").
@@ -104,17 +85,13 @@
</desc>
</func>
<func>
- <name>span(String, Chars) -> Length </name>
- <name>cspan(String, Chars) -> Length</name>
+ <name name="span" arity="2"/>
+ <name name="cspan" arity="2"/>
<fsummary>Span characters at start of string</fsummary>
- <type>
- <v>String = Chars = string()</v>
- <v>Length = integer()</v>
- </type>
<desc>
<p>Returns the length of the maximum initial segment of
- String, which consists entirely of characters from (not
- from) Chars.</p>
+ <c><anno>String</anno></c>, which consists entirely of characters from (not
+ from) <c><anno>Chars</anno></c>.</p>
<p>For example:</p>
<code type="none">
> string:span("\t abcdef", " \t").
@@ -124,17 +101,13 @@
</desc>
</func>
<func>
- <name>substr(String, Start) -> SubString</name>
- <name>substr(String, Start, Length) -> Substring</name>
+ <name name="substr" arity="2"/>
+ <name name="substr" arity="3"/>
<fsummary>Return a substring of <c>String</c></fsummary>
- <type>
- <v>String = SubString = string()</v>
- <v>Start = Length = integer()</v>
- </type>
<desc>
- <p>Returns a substring of <c>String</c>, starting at the
- position <c>Start</c>, and ending at the end of the string or
- at length <c>Length</c>.</p>
+ <p>Returns a substring of <c><anno>String</anno></c>, starting at the
+ position <c><anno>Start</anno></c>, and ending at the end of the string or
+ at length <c><anno>Length</anno></c>.</p>
<p>For example:</p>
<code type="none">
> substr("Hello World", 4, 5).
@@ -142,15 +115,11 @@
</desc>
</func>
<func>
- <name>tokens(String, SeparatorList) -> Tokens</name>
+ <name name="tokens" arity="2"/>
<fsummary>Split string into tokens</fsummary>
- <type>
- <v>String = SeparatorList = string()</v>
- <v>Tokens = [string()]</v>
- </type>
<desc>
- <p>Returns a list of tokens in <c>String</c>, separated by the
- characters in <c>SeparatorList</c>.</p>
+ <p>Returns a list of tokens in <c><anno>String</anno></c>, separated by the
+ characters in <c><anno>SeparatorList</anno></c>.</p>
<p>For example:</p>
<code type="none">
> tokens("abc defxxghix jkl", "x ").
@@ -158,15 +127,11 @@
</desc>
</func>
<func>
- <name>join(StringList, Separator) -> String</name>
+ <name name="join" arity="2"/>
<fsummary>Join a list of strings with separator</fsummary>
- <type>
- <v>StringList = [string()]</v>
- <v>Separator = string()</v>
- </type>
<desc>
- <p>Returns a string with the elements of <c>StringList</c>
- separated by the string in <c>Seperator</c>.</p>
+ <p>Returns a string with the elements of <c><anno>StringList</anno></c>
+ separated by the string in <c><anno>Separator</anno></c>.</p>
<p>For example:</p>
<code type="none">
> join(["one", "two", "three"], ", ").
@@ -174,44 +139,30 @@
</desc>
</func>
<func>
- <name>chars(Character, Number) -> String</name>
- <name>chars(Character, Number, Tail) -> String</name>
+ <name name="chars" arity="2"/>
+ <name name="chars" arity="3"/>
<fsummary>Returns a string consisting of numbers of characters</fsummary>
- <type>
- <v>Character = char()</v>
- <v>Number = integer()</v>
- <v>String = string()</v>
- </type>
<desc>
- <p>Returns a string consisting of <c>Number</c> of characters
- <c>Character</c>. Optionally, the string can end with the
- string <c>Tail</c>.</p>
+ <p>Returns a string consisting of <c><anno>Number</anno></c> of characters
+ <c><anno>Character</anno></c>. Optionally, the string can end with the
+ string <c><anno>Tail</anno></c>.</p>
</desc>
</func>
<func>
- <name>copies(String, Number) -> Copies</name>
+ <name name="copies" arity="2"/>
<fsummary>Copy a string</fsummary>
- <type>
- <v>String = Copies = string()</v>
- <v>Number = integer()</v>
- </type>
<desc>
- <p>Returns a string containing <c>String</c> repeated
- <c>Number</c> times.</p>
+ <p>Returns a string containing <c><anno>String</anno></c> repeated
+ <c><anno>Number</anno></c> times.</p>
</desc>
</func>
<func>
- <name>words(String) -> Count</name>
- <name>words(String, Character) -> Count</name>
+ <name name="words" arity="1"/>
+ <name name="words" arity="2"/>
<fsummary>Count blank separated words</fsummary>
- <type>
- <v>String = string()</v>
- <v>Character = char()</v>
- <v>Count = integer()</v>
- </type>
<desc>
- <p>Returns the number of words in <c>String</c>, separated by
- blanks or <c>Character</c>.</p>
+ <p>Returns the number of words in <c><anno>String</anno></c>, separated by
+ blanks or <c><anno>Character</anno></c>.</p>
<p>For example:</p>
<code type="none">
> words(" Hello old boy!", $o).
@@ -219,17 +170,12 @@
</desc>
</func>
<func>
- <name>sub_word(String, Number) -> Word</name>
- <name>sub_word(String, Number, Character) -> Word</name>
+ <name name="sub_word" arity="2"/>
+ <name name="sub_word" arity="3"/>
<fsummary>Extract subword</fsummary>
- <type>
- <v>String = Word = string()</v>
- <v>Character = char()</v>
- <v>Number = integer()</v>
- </type>
<desc>
- <p>Returns the word in position <c>Number</c> of <c>String</c>.
- Words are separated by blanks or <c>Character</c>s.</p>
+ <p>Returns the word in position <c><anno>Number</anno></c> of <c><anno>String</anno></c>.
+ Words are separated by blanks or <c><anno>Character</anno></c>s.</p>
<p>For example:</p>
<code type="none">
> string:sub_word(" Hello old boy !",3,$o).
@@ -237,19 +183,14 @@
</desc>
</func>
<func>
- <name>strip(String) -> Stripped</name>
- <name>strip(String, Direction) -> Stripped</name>
- <name>strip(String, Direction, Character) -> Stripped</name>
+ <name name="strip" arity="1"/>
+ <name name="strip" arity="2"/>
+ <name name="strip" arity="3"/>
<fsummary>Strip leading or trailing characters</fsummary>
- <type>
- <v>String = Stripped = string()</v>
- <v>Direction = left | right | both</v>
- <v>Character = char()</v>
- </type>
<desc>
<p>Returns a string, where leading and/or trailing blanks or a
- number of <c>Character</c> have been removed.
- <c>Direction</c> can be <c>left</c>, <c>right</c>, or
+ number of <c><anno>Character</anno></c> have been removed.
+ <c><anno>Direction</anno></c> can be <c>left</c>, <c>right</c>, or
<c>both</c> and indicates from which direction blanks are to be
removed. The function <c>strip/1</c> is equivalent to
<c>strip(String, both)</c>.</p>
@@ -260,19 +201,14 @@
</desc>
</func>
<func>
- <name>left(String, Number) -> Left</name>
- <name>left(String, Number, Character) -> Left</name>
+ <name name="left" arity="2"/>
+ <name name="left" arity="3"/>
<fsummary>Adjust left end of string</fsummary>
- <type>
- <v>String = Left = string()</v>
- <v>Character = char</v>
- <v>Number = integer()</v>
- </type>
<desc>
- <p>Returns the <c>String</c> with the length adjusted in
- accordance with <c>Number</c>. The left margin is
- fixed. If the <c>length(String)</c> &lt; <c>Number</c>,
- <c>String</c> is padded with blanks or <c>Character</c>s.</p>
+ <p>Returns the <c><anno>String</anno></c> with the length adjusted in
+ accordance with <c><anno>Number</anno></c>. The left margin is
+ fixed. If the <c>length(<anno>String</anno>)</c> &lt; <c><anno>Number</anno></c>,
+ <c><anno>String</anno></c> is padded with blanks or <c><anno>Character</anno></c>s.</p>
<p>For example:</p>
<code type="none">
> string:left("Hello",10,$.).
@@ -280,19 +216,14 @@
</desc>
</func>
<func>
- <name>right(String, Number) -> Right</name>
- <name>right(String, Number, Character) -> Right</name>
+ <name name="right" arity="2"/>
+ <name name="right" arity="3"/>
<fsummary>Adjust right end of string</fsummary>
- <type>
- <v>String = Right = string()</v>
- <v>Character = char</v>
- <v>Number = integer()</v>
- </type>
<desc>
- <p>Returns the <c>String</c> with the length adjusted in
- accordance with <c>Number</c>. The right margin is
- fixed. If the length of <c>(String)</c> &lt; <c>Number</c>,
- <c>String</c> is padded with blanks or <c>Character</c>s.</p>
+ <p>Returns the <c><anno>String</anno></c> with the length adjusted in
+ accordance with <c><anno>Number</anno></c>. The right margin is
+ fixed. If the length of <c>(<anno>String</anno>)</c> &lt; <c><anno>Number</anno></c>,
+ <c><anno>String</anno></c> is padded with blanks or <c><anno>Character</anno></c>s.</p>
<p>For example:</p>
<code type="none">
> string:right("Hello", 10, $.).
@@ -300,32 +231,23 @@
</desc>
</func>
<func>
- <name>centre(String, Number) -> Centered</name>
- <name>centre(String, Number, Character) -> Centered</name>
+ <name name="centre" arity="2"/>
+ <name name="centre" arity="3"/>
<fsummary>Center a string</fsummary>
- <type>
- <v>String = Centered = string()</v>
- <v>Character = char</v>
- <v>Number = integer()</v>
- </type>
<desc>
- <p>Returns a string, where <c>String</c> is centred in the
+ <p>Returns a string, where <c><anno>String</anno></c> is centred in the
string and surrounded by blanks or characters. The resulting
- string will have the length <c>Number</c>.</p>
+ string will have the length <c><anno>Number</anno></c>.</p>
</desc>
</func>
<func>
- <name>sub_string(String, Start) -> SubString</name>
- <name>sub_string(String, Start, Stop) -> SubString</name>
+ <name name="sub_string" arity="2"/>
+ <name name="sub_string" arity="3"/>
<fsummary>Extract a substring</fsummary>
- <type>
- <v>String = SubString = string()</v>
- <v>Start = Stop = integer()</v>
- </type>
<desc>
- <p>Returns a substring of <c>String</c>, starting at the
- position <c>Start</c> to the end of the string, or to and
- including the <c>Stop</c> position.</p>
+ <p>Returns a substring of <c><anno>String</anno></c>, starting at the
+ position <c><anno>Start</anno></c> to the end of the string, or to and
+ including the <c><anno>Stop</anno></c> position.</p>
<p>For example:</p>
<code type="none">
sub_string("Hello World", 4, 8).
@@ -383,15 +305,15 @@ sub_string("Hello World", 4, 8).
</desc>
</func>
<func>
- <name>to_lower(String) -> Result</name>
- <name>to_lower(Char) -> CharResult</name>
- <name>to_upper(String) -> Result</name>
- <name>to_upper(Char) -> CharResult</name>
+ <name name="to_lower" arity="1" clause_i="1"/>
+ <name name="to_lower" arity="1" clause_i="2"/>
+ <name name="to_upper" arity="1" clause_i="1"/>
+ <name name="to_upper" arity="1" clause_i="2"/>
<fsummary>Convert case of string (ISO/IEC 8859-1)</fsummary>
- <type>
- <v>String = Result = string()</v>
- <v>Char = CharResult = integer()</v>
- </type>
+ <type variable="String" name_i="1"/>
+ <type variable="Result" name_i="1"/>
+ <type variable="Char"/>
+ <type variable="CharResult"/>
<desc>
<p>The given string or character is case-converted. Note that
the supported character set is ISO/IEC 8859-1 (a.k.a. Latin 1),