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!
--
You received this message because you are subscribed to the Google Groups
"elixir-lang-core" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to elixir-lang-core+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/elixir-lang-core/d843c44b-e658-4d71-bb66-00c1e0a21ef7n%40googlegroups.com.
