[erlang-questions] Padding a binary to a multiple of 4 bytes
Sat Dec 20 14:03:56 CET 2008
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?
Also, I was wondering why the "/binary" suffix was needed if I want to
append to the Bin variable. Intuitively, I have written <<Bin, 0:size>>,
but it doesn't work.
Thanks in advance for your help!
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