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Add an entry to a map
Given an empty pets map, add the mapping from
"rob"
to
"dog"
fsharp
pets <- (Map.add "rob" "dog" pets)
#light
open System
open System.Collections
let mutable pets = Map.empty
pets <- (Map.add "rob" "dog" pets)
for pet in pets do printfn "%s -> %s" (pet.Key) (pet.Value) done
fsharp
pets.Add("rob", "dog")
#light
open System
open System.Collections
let pets = new Generic.Dictionary<string, string>()
pets.Add("rob", "dog")
for pet in pets do printfn "%s -> %s" (pet.Key) (pet.Value) done
erlang
Pets1 = dict:store(rob, dog, Pets0).
-module(addtoempty).
-export([start/0]).
start() ->
Pets0 = dict:new(),
Pets1 = dict:store(rob, dog, Pets0).
erlang
ets:insert(Pets, {rob, dog}).
-module(addtoempty).
-export([start/0]).
start() ->
Pets = ets:new(the_map_name, [ordered_set, private, {keypos, 1}]),
ets:insert(Pets, {rob, dog}).
erlang
Pets1 = gb_trees:enter(rob, dog, Pets0).
-module(addtoempty).
-export([start/0]).
start() ->
Pets0 = gb_trees:empty(),
Pets1 = gb_trees:enter(rob, dog, Pets0).
clojure
(assoc {} 'rob 'dog)
(assoc {} 'rob 'dog)
groovy
pets['rob'] = 'dog'
pets = [:]
pets['rob'] = 'dog'
println pets
groovy
pets.rob = 'dog'
pets = [:]
pets.rob = 'dog'
println pets
groovy
pets.put('rob', 'dog')
pets = [:]
pets.put('rob', 'dog')
println pets
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fantom
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