This is easy in Haskell too and binary provide everything you need. It's not like you're _forced_ to use the Vector instance to construct a Vector from your values, you can simply repeat (with replicateM) the get for the Float (or Double) instance instead and build a Vector from the resulting list (if you do it properly it will probably fuse into a tight loop anyway).

I don't understand your problem ?

On Mon, Sep 29, 2014 at 5:52 PM, David Raymond <raymond@kestrel.nmt.edu> wrote:

I am trying to read and write to/from files or stdout/stdin that have
an ascii header followed by unformatted float32 binary data. (The
files are created using a C program.) The ascii header first needs to
be parsed to understand the structure of the floating point data. I
have solved the parsing problem, but getting the unformatted binary
float data into a series of float (or double) immutable, unboxed
vectors has defeated me so far. The binary package doesn't help as
far as I can see, as the binary format it reads and writes has some
control information at the beginning that doesn't exist in the format
I am reading.

This is easy in C, but seems to be hard in Haskell unless I am missing
something.

Any suggestions?

--
David J. Raymond
Prof. of Physics
New Mexico Tech
http://www.physics.nmt.edu/~raymond/index.html
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