[erlang-questions] bug in binary:split with trim?

[Pablo Platt]

binary:split with the trim option doesn't remove empty results from the beginning of the binary:

binary:split(<<"/a/b/">>, <<"/">>, [global, trim]).

[<<>>,<<"a">>,<<"b">>]

binary:split(<<"//a/b///">>, <<"/">>, [trim, global]).

[<<>>,<<>>,<<"a">>,<<"b">>]

Is this a bug?

Thanks

[Ahmed Omar]

According to documentation it's not

trim

Removes trailing empty parts of the result (as does trim in re:split/3)

http://www.erlang.org/doc/man/binary.html#split-2

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[Pablo Platt]

Is there a reason to make it work only for trailing empty parts but not for all empty parts?

---

From: Ahmed Omar <spawn...@gmail.com>
To: Pablo Platt <pablo...@yahoo.com>
Cc: "erlang-q...@erlang.org" <erlang-q...@erlang.org>
Sent: Tuesday, June 28, 2011 1:43 PM
Subject: Re: [erlang-questions] bug in binary:split with trim?

[Wes James]

Little more processing, but....

[list_to_binary(X) || X <- string:tokens(binary_to_list(<<"//a/b///">>),"/")].

[<<"a">>,<<"b">>]

or maybe like this:

[Result]=string:tokens(binary:split(<<"//a/b///">>, <<"/">>, [trim,
global]), [<<>>]).
[[<<"a">>,<<"b">>]]
11> Result.
[<<"a">>,<<"b">>]

-wes

[Hynek Vychodil]

Why not simply?
[X || X<- binary:split(<<"//a/b///">>, <<"/">>, [trim, global]), X=/=<<>>]

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--Hynek (Pichi) Vychodil

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