Houdini
Analogue of python's: array.array('H', file.read(n_bytes))
First, let’s say, that n_bytes = 2 and we do not need an array, then it’s pretty simple to write in elixir:
<<data :: bytes-size(2), _ :: binary>> = file
res = :binary.decode_unsigned(data)
Let’s return to python line: array.array('H', file.read(n_bytes))
It returns 2-byte array of numbers. ‘H’ means 2 byte.
So the question is, how to make the same in elixir?
Thanks in advance
First Post!
lud
Hello,
You could try something like that :
data = IO.read(file, 2)
array = for <<part::bytes-size(2) <- data>>, do: :binary.decode_unsigned(part)
Most Liked
josevalim
You should also be able to get an integer directly too:
for <<part::integer-unsigned-size(2) <- data>>, do: part
lud
Yes you can add the endianness directly in the form @josevalim gave :
for <<part::little-integer-unsigned-size(16) <- data>>, do: part
All possibilities are described here: Kernel.SpecialForms — Elixir v1.20.2
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