How do I check if a element is contained within a list?

Question

How can I catch word from list and return True in Erlang?

catch_word(msg) ->
    Bad = ["BadWord1", "BadWord2"],
    case Bad in msg of
        true ->
            true;
        false ->
            false
    end.

catch_word("Hello, How are u BadWord1").

Answer 1

Welcome to Erlang, you may want to try this:

-export([catch_word/2]).

catch_word(Msg,BadWords)->
    catch_word(Msg,BadWords,0).

catch_word(Msg,[],0)->
    false;
catch_word(Msg,[Word|BadWords],0)->
        catch_word(Msg,BadWords,string:str(Msg,Word));
catch_word(_,_,N)->
    true.

and

your_module:catch_word("Hello, How are u BadWord1",["BadWord1", "BadWord2"]).