如何使用Erlang迭代列表中的所有元素

Question

I'm new to Erlang. All I want to do is take a list, loop through each element so I can send them to a function. Cannot find a clear example anywhere.

Example of what I want to do:

Mylist = [a,b,c,d,e,f,g]

for (i in Mylist) {
  otherFunction(Mylist[i]);
}

Answer 1

Hope that help :)

func([]) -> ok;
func([H|T]) ->
    otherFunction(H),
    func(T).

Or you can use list comprehension:

[otherFunction(H) || H <- L].

Answer 2

You may use lists:foreach

L = [a,b,c,d,e,f,g],
Function = fun(Elem) -> atom_to_binary(Elem, utf8) end,
lists:foreach(Function, L).

Or if you need to receive some result from the function you may use lists:foldl or lists:foldr

L = [a,b,c,d,e,f,g],
F = fun(Elem, Acc) -> [atom_to_binary(Elem, utf8) | Acc] end,
lists:foldl(F, [], L).

Response will be

[<<"g">>,<<"f">>,<<"e">>,<<"d">>,<<"c">>,<<"b">>,<<"a">>]