You open the file in the correct way. To read the integer, do read(f,
Int32) followed by read(f, Float64, 1_000_000) to read the million floats.
See the manual at
http://docs.julialang.org/en/release-0.5/stdlib/io-network/
On Tue, Oct 25, 2016 at 10:05 PM, Aleksandr Mikheev <al.mikhee...@gmail.com>
wrote:
> Hello, sorry if this question have already been asked, but I could not
> find a similar thread. So, I have a .dat ("numbers.dat") file, which I
> should open. I believe I should do something like this:
>
> f = open("numbers.dat")
>
>
> And after that I tried to read it:
>
> readlines(f)
>
>
> However, Julia writes the Error: "UnicodeError: invalid character index".
> My tutor told me that this is a binary file, so what I need is a binary
> read, such as fread in C/C++. I tried to read the documentation, tried
> to google, but still cannot understand what should I do. Also, a quote from
> my tutor, which can probably help you to understand the problem better: "The
> first 4 bytes contain an integer (in this case, 1,000,000) and then
> 1,000,000 floats of 8 bytes each".
>
> Thank you in advance!
>
