diff options
Diffstat (limited to 'lib/stdlib')
| -rw-r--r-- | lib/stdlib/doc/src/maps.xml | 17 | ||||
| -rw-r--r-- | lib/stdlib/test/maps_SUITE.erl | 33 |
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. |