aboutsummaryrefslogtreecommitdiffstats
path: root/lib/stdlib/doc
diff options
context:
space:
mode:
Diffstat (limited to 'lib/stdlib/doc')
-rw-r--r--lib/stdlib/doc/src/Makefile1
-rw-r--r--lib/stdlib/doc/src/maps.xml318
-rw-r--r--lib/stdlib/doc/src/ref_man.xml1
-rw-r--r--lib/stdlib/doc/src/specs.xml1
-rw-r--r--lib/stdlib/doc/src/supervisor.xml6
-rw-r--r--lib/stdlib/doc/src/unicode_usage.xml3
6 files changed, 326 insertions, 4 deletions
diff --git a/lib/stdlib/doc/src/Makefile b/lib/stdlib/doc/src/Makefile
index 6f1e61e70c..ff77c3eea0 100644
--- a/lib/stdlib/doc/src/Makefile
+++ b/lib/stdlib/doc/src/Makefile
@@ -71,6 +71,7 @@ XML_REF3_FILES = \
lib.xml \
lists.xml \
log_mf_h.xml \
+ maps.xml \
math.xml \
ms_transform.xml \
orddict.xml \
diff --git a/lib/stdlib/doc/src/maps.xml b/lib/stdlib/doc/src/maps.xml
new file mode 100644
index 0000000000..76137e3dee
--- /dev/null
+++ b/lib/stdlib/doc/src/maps.xml
@@ -0,0 +1,318 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!DOCTYPE erlref SYSTEM "erlref.dtd">
+
+<erlref>
+ <header>
+ <copyright>
+ <year>2013</year><year>2014</year>
+ <holder>Ericsson AB. All Rights Reserved.</holder>
+ </copyright>
+ <legalnotice>
+ The contents of this file are subject to the Erlang Public License,
+ Version 1.1, (the "License"); you may not use this file except in
+ compliance with the License. You should have received a copy of the
+ Erlang Public License along with this software. If not, it can be
+ retrieved online at http://www.erlang.org/.
+
+ Software distributed under the License is distributed on an "AS IS"
+ basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ the License for the specific language governing rights and limitations
+ under the License.
+ </legalnotice>
+ <title>maps</title>
+ <prepared>Björn-Egil Dahlberg</prepared>
+ <docno>1</docno>
+ <date>2014-02-28</date>
+ <rev>A</rev>
+ </header>
+ <module>maps</module>
+ <modulesummary>Maps Processing Functions</modulesummary>
+ <description>
+ <p>This module contains functions for maps processing.</p>
+ </description>
+ <funcs>
+
+ <func>
+ <name name="find" arity="2"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Returns a tuple <c>{ok, Value}</c> where <c><anno>Value</anno></c> is the value associated with <c><anno>Key</anno></c>,
+ or <c>error</c> if no value is associated with <c><anno>Key</anno></c> in <c><anno>Map</anno></c>.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{"hi" => 42},
+ Key = "hi",
+ maps:find(Key,Map).
+{ok,42} </code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="fold" arity="3"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Calls <c>F(K, V, AccIn)</c> for every <c><anno>K</anno></c> to value <c><anno>V</anno></c>
+ association in <c><anno>Map</anno></c> in
+ arbitrary order. The function <c>fun F/3</c> must return a new accumulator
+ which is passed to the next successive call. <c>maps:fold/3</c> returns the final
+ value of the accumulator. The initial accumulator value <c><anno>Init</anno></c> is returned if
+ the map is empty.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Fun = fun(K,V,AccIn) when is_list(K) -> AccIn + V end,
+ Map = #{"k1" => 1, "k2" => 2, "k3" => 3},
+ maps:fold(Fun,0,Map).
+6</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="from_list" arity="1"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ The function takes a list of key-value tuples elements and builds a
+ map. The associations may be in any order and both keys and values in the
+ association may be of any term. If the same key appears more than once,
+ the latter (rightmost) value is used and the previous values are ignored.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> List = [{"a",ignored},{1337,"value two"},{42,value_three},{"a",1}],
+ maps:from_list(List).
+#{42 => value_three,1337 => "value two","a" => 1}</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="get" arity="2"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Returns the value <c><anno>Value</anno></c> associated with <c><anno>Key</anno></c> if
+ <c><anno>Map</anno></c> contains <c><anno>Key</anno></c>.
+ If no value is associated with <c><anno>Key</anno></c> then the call will
+ fail with an exception.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Key = 1337,
+ Map = #{42 => value_two,1337 => "value one","a" => 1},
+ maps:get(Key,Map).
+"value one"</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="is_key" arity="2"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Returns <c>true</c> if map <c><anno>Map</anno></c> contains <c><anno>Key</anno></c> and returns
+ <c>false</c> if it does not contain the <c><anno>Key</anno></c>.
+ The function will fail with an exception if <c><anno>Map</anno></c> is not a Map.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{"42" => value}.
+#{"42"> => value}
+> maps:is_key("42",Map).
+true
+> maps:is_key(value,Map).
+false</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="keys" arity="1"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Returns a complete list of keys, in arbitrary order, which resides within <c><anno>Map</anno></c>.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{42 => value_three,1337 => "value two","a" => 1},
+ maps:keys(Map).
+[42,1337,"a"]</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="map" arity="2"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ The function produces a new map <c><anno>Map2</anno></c> by calling the function <c>fun F(K, V1)</c> for
+ every <c><anno>K</anno></c> to value <c><anno>V1</anno></c> association in <c><anno>Map1</anno></c> in arbitrary order.
+ The function <c>fun F/2</c> must return the value <c><anno>V2</anno></c> to be associated with key <c><anno>K</anno></c> for
+ the new map <c><anno>Map2</anno></c>.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Fun = fun(K,V1) when is_list(K) -> V1*2 end,
+ Map = #{"k1" => 1, "k2" => 2, "k3" => 3},
+ maps:map(Fun,Map).
+#{"k1" => 2,"k2" => 4,"k3" => 6}</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="merge" arity="2"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Merges two maps into a single map <c><anno>Map3</anno></c>. If two keys exists in both maps the
+ value in <c><anno>Map1</anno></c> will be superseded by the value in <c><anno>Map2</anno></c>.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map1 = #{a => "value_one", b => "value_two"},
+ Map2 = #{a => 1, c => 2},
+ maps:merge(Map1,Map2).
+#{a => 1,b => "value_two",c => 2}</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="new" arity="0"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Returns a new empty map.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> maps:new().
+#{}</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="put" arity="3"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Associates <c><anno>Key</anno></c> with value <c><anno>Value</anno></c> and inserts the association into map <c>Map2</c>.
+ If key <c><anno>Key</anno></c> already exists in map <c><anno>Map1</anno></c>, the old associated value is
+ replaced by value <c><anno>Value</anno></c>. The function returns a new map <c><anno>Map2</anno></c> containing the new association and
+ the old associations in <c><anno>Map1</anno></c>.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{"a" => 1}.
+#{"a" => 1}
+> maps:put("a", 42, Map).
+#{"a" => 42}
+> maps:put("b", 1337, Map).
+#{"a" => 1,"b" => 1337}</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="remove" arity="2"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ The function removes the <c><anno>Key</anno></c>, if it exists, and its associated value from
+ <c><anno>Map1</anno></c> and returns a new map <c><anno>Map2</anno></c> without key <c><anno>Key</anno></c>.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{"a" => 1}.
+#{"a" => 1}
+> maps:remove("a",Map).
+#{}
+> maps:remove("b",Map).
+#{"a" => 1}</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="size" arity="1"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ The function returns the number of key-value associations in the <c><anno>Map</anno></c>.
+ This operation happens in constant time.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{42 => value_two,1337 => "value one","a" => 1},
+ maps:size(Map).
+3</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="to_list" arity="1"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ The fuction returns a list of pairs representing the key-value associations of <c><anno>Map</anno></c>,
+ where the pairs, <c>[{K1,V1}, ..., {Kn,Vn}]</c>, are returned in arbitrary order.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{42 => value_three,1337 => "value two","a" => 1},
+ maps:to_list(Map).
+[{42,value_three},{1337,"value two"},{"a",1}]</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="update" arity="3"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ If <c><anno>Key</anno></c> exists in <c><anno>Map1</anno></c> the old associated value is
+ replaced by value <c><anno>Value</anno></c>. The function returns a new map <c><anno>Map2</anno></c> containing
+ the new associated value. If <c><anno>Key</anno></c> does not exist in <c><anno>Map1</anno></c> an exception is
+ generated.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{"a" => 1}.
+#{"a" => 1}
+> maps:update("a", 42, Map).
+#{"a" => 42}</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="values" arity="1"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Returns a complete list of values, in arbitrary order, contained in map <c>M</c>.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{42 => value_three,1337 => "value two","a" => 1},
+ maps:values(Map).
+[value_three,"value two",1]</code>
+ </desc>
+ </func>
+
+ <func>
+ <name name="without" arity="2"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Returns a new map <c><anno>Map2</anno></c> without the keys <c>K1</c> through <c>Kn</c> and their associated values from map <c><anno>Map1</anno></c>.
+ Any key in <c><anno>Ks</anno></c> that does not exist in <c><anno>Map1</anno></c> are ignored.
+ </p>
+ <p>Example:</p>
+ <code type="none">
+> Map = #{42 => value_three,1337 => "value two","a" => 1},
+ Ks = ["a",42,"other key"],
+ maps:without(Ks,Map).
+#{1337 => "value two"}</code>
+ </desc>
+ </func>
+ </funcs>
+</erlref>
diff --git a/lib/stdlib/doc/src/ref_man.xml b/lib/stdlib/doc/src/ref_man.xml
index 4ecd02a4bf..6c35578bdf 100644
--- a/lib/stdlib/doc/src/ref_man.xml
+++ b/lib/stdlib/doc/src/ref_man.xml
@@ -68,6 +68,7 @@
<xi:include href="lib.xml"/>
<xi:include href="lists.xml"/>
<xi:include href="log_mf_h.xml"/>
+ <xi:include href="maps.xml"/>
<xi:include href="math.xml"/>
<xi:include href="ms_transform.xml"/>
<xi:include href="orddict.xml"/>
diff --git a/lib/stdlib/doc/src/specs.xml b/lib/stdlib/doc/src/specs.xml
index 213ce7563f..60a04ed5e7 100644
--- a/lib/stdlib/doc/src/specs.xml
+++ b/lib/stdlib/doc/src/specs.xml
@@ -34,6 +34,7 @@
<xi:include href="../specs/specs_lib.xml"/>
<xi:include href="../specs/specs_lists.xml"/>
<xi:include href="../specs/specs_log_mf_h.xml"/>
+ <xi:include href="../specs/specs_maps.xml"/>
<xi:include href="../specs/specs_math.xml"/>
<xi:include href="../specs/specs_ms_transform.xml"/>
<xi:include href="../specs/specs_orddict.xml"/>
diff --git a/lib/stdlib/doc/src/supervisor.xml b/lib/stdlib/doc/src/supervisor.xml
index 8197684d2d..3a5027d595 100644
--- a/lib/stdlib/doc/src/supervisor.xml
+++ b/lib/stdlib/doc/src/supervisor.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1996</year><year>2013</year>
+ <year>1996</year><year>2014</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -262,12 +262,12 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules}
locally as <c>Name</c> using <c>register/2</c>. If
<c><anno>SupName</anno>={global,Name}</c> the supervisor is registered
globally as <c>Name</c> using <c>global:register_name/2</c>. If
- <c><anno>SupName</anno>={via,Module,Name}</c> the supervisor
+ <c><anno>SupName</anno>={via,<anno>Module</anno>,<anno>Name</anno>}</c> the supervisor
is registered as <c>Name</c> using the registry represented by
<c>Module</c>. The <c>Module</c> callback should export the functions
<c>register_name/2</c>, <c>unregister_name/1</c> and <c>send/2</c>,
which should behave like the corresponding functions in <c>global</c>.
- Thus, <c>{via,global,Name}</c> is a valid reference.</p>
+ Thus, <c>{via,global,<anno>Name</anno>}</c> is a valid reference.</p>
<p>If no name is provided, the supervisor is not registered.</p>
<p><c><anno>Module</anno></c> is the name of the callback module.</p>
<p><c><anno>Args</anno></c> is an arbitrary term which is passed as
diff --git a/lib/stdlib/doc/src/unicode_usage.xml b/lib/stdlib/doc/src/unicode_usage.xml
index 75505d7d84..c843ef7736 100644
--- a/lib/stdlib/doc/src/unicode_usage.xml
+++ b/lib/stdlib/doc/src/unicode_usage.xml
@@ -996,7 +996,8 @@ ok
</pre>
</section>
<section>
- <title><marker id="unicode_options_summary"/>Summary of Options</title>
+ <title>Summary of Options</title>
+ <marker id="unicode_options_summary"/>
<p>The Unicode support is controlled by both command line switches,
some standard environment variables and the version of OTP you are
using. Most options affect mainly the way Unicode data is displayed,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 00:16:14 +0000