Hamler Interpreter

$ hamler repl
> -- List, range and enums
> [1,2,3]
> [1..10]
> ['a'..'z']
> -- erlang style maps
> import Data.Map as Map
> -- New map
> m = #{"foo" => "bar", "bar" => "foo"}
> -- Match Map
> #{"foo" := a, "bar" := b} = m
> -- get, put
> Map.get "foo" m -- a = "bar"
> Map.get "bar" m -- b = "foo"
> m1 = Map.put "key" "val"
> -- keys, values
> keys = Map.keys m
> values = Map.values m