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-rw-r--r--lib/stdlib/doc/src/maps.xml17
-rw-r--r--lib/stdlib/test/maps_SUITE.erl33
2 files changed, 39 insertions, 11 deletions
diff --git a/lib/stdlib/doc/src/maps.xml b/lib/stdlib/doc/src/maps.xml
index b37f7fd7fd..64229fa8d3 100644
--- a/lib/stdlib/doc/src/maps.xml
+++ b/lib/stdlib/doc/src/maps.xml
@@ -319,6 +319,23 @@ false</code>
</func>
<func>
+ <name name="with" arity="2"/>
+ <fsummary></fsummary>
+ <desc>
+ <p>
+ Returns a new map <c><anno>Map2</anno></c> with 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).
+#{42 => value_three,"a" => 1}</code>
+ </desc>
+ </func>
+
+ <func>
<name name="without" arity="2"/>
<fsummary></fsummary>
<desc>
diff --git a/lib/stdlib/test/maps_SUITE.erl b/lib/stdlib/test/maps_SUITE.erl
index c826ee731a..dda20a615b 100644
--- a/lib/stdlib/test/maps_SUITE.erl
+++ b/lib/stdlib/test/maps_SUITE.erl
@@ -24,10 +24,7 @@
-include_lib("test_server/include/test_server.hrl").
-% Default timetrap timeout (set in init_per_testcase).
-% This should be set relatively high (10-15 times the expected
-% max testcasetime).
--define(default_timeout, ?t:minutes(4)).
+-define(default_timeout, ?t:minutes(1)).
% Test server specific exports
-export([all/0]).
@@ -37,13 +34,13 @@
-export([init_per_testcase/2]).
-export([end_per_testcase/2]).
--export([get3/1]).
+-export([t_get_3/1,t_with_2/1,t_without_2/1]).
suite() ->
[{ct_hooks, [ts_install_cth]}].
all() ->
- [get3].
+ [t_get_3,t_with_2,t_without_2].
init_per_suite(Config) ->
Config.
@@ -52,7 +49,7 @@ end_per_suite(_Config) ->
ok.
init_per_testcase(_Case, Config) ->
- ?line Dog=test_server:timetrap(?default_timeout),
+ Dog=test_server:timetrap(?default_timeout),
[{watchdog, Dog}|Config].
end_per_testcase(_Case, Config) ->
@@ -60,10 +57,24 @@ end_per_testcase(_Case, Config) ->
test_server:timetrap_cancel(Dog),
ok.
-get3(Config) when is_list(Config) ->
+t_get_3(Config) when is_list(Config) ->
Map = #{ key1 => value1, key2 => value2 },
DefaultValue = "Default value",
- ?line value1 = maps:get(key1, Map, DefaultValue),
- ?line value2 = maps:get(key2, Map, DefaultValue),
- ?line DefaultValue = maps:get(key3, Map, DefaultValue),
+ value1 = maps:get(key1, Map, DefaultValue),
+ value2 = maps:get(key2, Map, DefaultValue),
+ DefaultValue = maps:get(key3, Map, DefaultValue),
+ ok.
+
+t_without_2(_Config) ->
+ Ki = [11,22,33,44,55,66,77,88,99],
+ M0 = maps:from_list([{{k,I},{v,I}}||I<-lists:seq(1,100)]),
+ M1 = maps:from_list([{{k,I},{v,I}}||I<-lists:seq(1,100) -- Ki]),
+ M1 = maps:without([{k,I}||I <- Ki],M0),
+ ok.
+
+t_with_2(_Config) ->
+ Ki = [11,22,33,44,55,66,77,88,99],
+ M0 = maps:from_list([{{k,I},{v,I}}||I<-lists:seq(1,100)]),
+ M1 = maps:from_list([{{k,I},{v,I}}||I<-Ki]),
+ M1 = maps:with([{k,I}||I <- Ki],M0),
ok.