Login
|
Signup
langref.org
-
ruby
,
erlang
, and
fantom
add..
all
clojure
cpp
csharp
fsharp
go
groovy
haskell
java
ocaml
perl
php
python
scala
Home
All
Solved
Unsolved
Strings
Numbers
Regex
Lists
Maps
Structure
Files
Dates
OOP
Networking
XML
Algorithms
Misc
Parallel
View Problem
Maps
Declaration
Define an empty map
ruby
map = {}
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)]).
fantom
map := [:]
class SolutionXX
{
Void main()
{
map := [:]
}
}
Submit a new solution for
ruby
,
erlang
, or
fantom
There are 21 other solutions in
additional
languages (
clojure
,
cpp
,
fsharp
,
go
...)