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Define an unmodifiable empty map
map = {}.freeze
const std::map<T1,T2> immutable_map_instance_of_type_t1_to_t2;
// Most native fsharp data structures are immutable - updating a 'map' sees a modified copy created
let map = Map.empty
let map = Map.empty
empty = Collections.EMPTY_MAP
map = [:].asImmutable()
def empty = MapUtils.EMPTY_SORTED_MAP
def empty = ImmutableMap.of()
import qualified Data.Map as Map
output :: Map.Map k v
output = Map.empty
output :: Map.Map k v
output = Map.empty
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