In this article, I will explain why Elixir has a dot when calling anonymous functions. I have explained this elsewhere in forums and mailing lists but I guess an article makes it more official. In other words, Elixir has this: some_fun = fn x, y -> x + y end some_fun.(1, 2) #=> 3 Note the dot between the variable and the arguments. The main reason for this choice is because functions in Elixir hav