Re: [Haskell-beginners] Syntactic sugar to insert into a Map?

Hi. On 21 July 2013 17:23, martin wrote:

I just want to insert several key/value pairs, something like

Map.empty insert key1 val1 insert key2 val2 return theMap

If you really want this syntax, what about using the writer monad: import Control.Monad.Writer import qualified Data.Map as M m = execWriter $ do insert 1 "foo" insert 2 "bar" where insert k v = tell (M.singleton k v) -- m = fromList [(1,"foo"),(2,"bar")] Hope this helps, Ozgur