what happened with the existing `--` operator? about pipeline HOT 2 CLOSED

In my experiences in some code reviews in some big or small projects like OTP, Ejabberd, ... . Erlang developers often don't like to use -- operator in produnction env. (at least in main parts of code which should be run for many times). so when you include this lib's header file, Only you can use -- operator in tuples, lists or maps for seeing difference of two lists.
example:

...
-include_lib("pipeline/include/pipeline).

test() ->
    {Diff} = {[1,2,3] -- [1]}. % Diff = [2,3]

technically in compile time, it does not search in tuples, lists, maps for pipelining.

from pipeline.

I'm still working on new library which supports pipeline and other function compositions.
For example writing:

?bool_exec( a() -- b() -- c() )

will equal to writing

case a() of
    true ->
        case b() of
            true ->
                c();
            false ->
                false
        end;
    false ->
        false
end.

or writing:

?ok_pipeline( a() -- b() -- c() )

will equal to writing:

case a() of
    {ok, Result1} ->
        case b(Result1) of
            {ok, Result2} ->
                c(Result2);
            {error, _}=Err ->
                Err
        end;
    {error, _}=Err ->
        Err
end.

If you need just pipelining, use this and you cant use -- operator with its default usage in every place. In next library which supports pipeline too, i will push it in a macro like ?pipeline, then you can use -- operator outside that macro with its default usage.

from pipeline.