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Maps
Declaration
Define an empty map
erlang
Map = dict:new(),
-module(emptymap).
-export([start/0]).
start() ->
Map = dict:new(),
io:format("~B~n", [dict:size(Map)]).
erlang
Map = orddict:new(),
-module(emptymap).
-export([start/0]).
start() ->
Map = orddict:new(),
io:format("~B~n", [orddict:size(Map)]).
erlang
Map = gb_trees:empty(),
-module(emptymap).
-export([start/0]).
start() ->
Map = gb_trees:empty(),
io:format("~B~n", [gb_trees:size(Map)]).
erlang
Map = ets:new(the_map_name, [set, private, {keypos, 1}]),
-module(emptymap).
-export([start/0]).
start() ->
Map = ets:new(the_map_name, [set, private, {keypos, 1}]),
io:format("~B~n", [ets:info(Map, size)]).
clojure
(def m {})
(def m {})
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