[erlang-questions] wise binary tails?

[Torben Hoffmann]

I think you should read
http://erlang.org/doc/efficiency_guide/binaryhandling.html and try to see if
it can explain your question - it seems that your code is what is the most
optimal, but I would recommend reading it rather than trusting my quick gaze
over the documentation.

Cheers,
Torben

On Wed, May 12, 2010 at 19:56, Henning Diedrich <hd2010@REDACTED> wrote:

> If I have code like this:
>
> traverse(<<Bar:24, Rest>>) ->    [  Bar |  traverse(Rest) ];
>
> traverse(<<>>) -> [].
>
> traverse(FooBin).
>
> - or -
>
> [ Bar || <<Bar:24>> <= FooBin ].
>
> is Erlang internally doing the wise thing of simply shifting a pointer into
> the low level buffer where FooBin is stored.
>
> And thus avoids copying the rest of the buffer again and again?
>
> Thanks!
> Henning
>



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