如何在erlang中删除字符串中的符号

-module(string_utils).
-export([remove_symbols/1]).

remove_symbols(String) ->
    Regex = "[^a-zA-Z0-9]",
    re:replace(String, Regex, "", [{return, list}]).

1> string_utils:remove_symbols("Hello, World!").
"HelloWorld"
2> string_utils:remove_symbols("123-456-7890").
"1234567890"