[erlang-questions] Padding a binary to a multiple of 4 bytes
Sun Dec 21 09:04:38 CET 2008
Camille Troillard wrote:
> Hi !
> I am new to Erlang, and would like to ask experienced users some advices
> on best practices I should adopt.
> Right now, I would like to know what is the best way of padding a binary
> to a multiple of 4 bytes.
> I have written a function like this:
> pad_to4 (Bin) ->
> case (size(Bin) rem 4) of
> 0 -> Bin;
> Pad -> <<Bin/binary, 0:((4-Pad)*8)>>
> I don't find it very elegant, and guess there is a better way of doing
> this. Perhaps using binary comprehensions? What is your suggestion?
pad_to4 (Bin) ->
Padding_bits = (4 - (size(Bin) rem 4)) * 8,
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