[erlang-questions] How do I elegantly check many conditions?
Paul Fisher
pfisher@REDACTED
Fri Mar 20 15:34:15 CET 2009
Hynek Vychodil wrote:
> One of Joe's suggestion: program success case code separated from error
> handling. You can make it in this way
>
> create_user(Email, UserName, Password) ->
> try
> ok = new_email(Email),
> ok = valid_user_name(UserName),
> ok = new_user(UserName),
> ok = strong_password(Password),
> ...
> _create_user(Email, UserName, Password)
> catch
> error:{badmatch, email_in_use} -> do_something();
> error:{badmatch, invalid_user_name} -> do_something();
> error:{badmatch, user_exists} -> do_something();
> error:{badmatch, weak_password} -> do_something();
> ...
> end.
+1 Bravo!
--
paul
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