file IO operations

[Vadim Skubilin]

Hello to all.

Can this code be converted from c# into code in kdb?

I had read about read1, but I did not see anything about position of stream for writing.

        static int GetInt32(string path, int index)

        {

            FileStream stream = new FileStream(path, FileMode.Open);

            stream.Position = index * 4;

            byte[] bytes = new byte[4];

            stream.Read(bytes, 0, 4);

            int value = BitConverter.ToInt32(bytes, 0);

            stream.Close();

            return value;

        }

        static void SetInt32(string path, int index, int value)

        {

            FileStream stream = new FileStream(path, FileMode.OpenOrCreate);

            stream.Position = index * 4;

            byte[] bytes = BitConverter.GetBytes(value);

            stream.Write(bytes, 0, 4);

            stream.Close();

        }

[Yan Yan]

I use the dd linux command. I have yet to find any built-in kdb functions to do that.

http://stackoverflow.com/questions/15238100/use-dd-to-write-data-starting-from-a-specific-location

[Vadim Skubilin]

I am Windows user, so I do not have this command...

[Andrew Kozyrev]

Hi,

read1 supports (file;offset;length) format.

WBR, Andrey Kozyrev 

[skuvv]

Hello Andrew.

Yes I know about read0/read1, I already wrote about this.

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[Yan Yan]

If you are on windows, use cygwin dd.exe, C stdio, or C++ fstream to perform random writes.