A common task is to iterate over a map performing some operation thereby
producing a new map. There are some ways to do this in Elixir presently,
the simplest probably being for...into:
for {key, val} <- map, into: %{} do
{key, val * 2}
end
Enum.reduce/3 is also an option. However, Erlang provides a simple function
to replace the values of a map with maps:map function:
maps:map(fun(Key, Val) -> 2 * Val end, Map)
I think an equivalent of this in Elixir would be very useful either as
Map.map/2 or Map.transform_values/2 like so:
Map.transform_values(map, fn {_key, val} -> val * 2 end)
I'm interested to hear if the community considers this a worthwhile
addition!
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