Hi,

My program does not do what I want it to do.

import std.stdio;
import std.stream;

int main(string[] argv) {
	Stream file = new BufferedFile("D:\\test.txt", FileMode.OutNew);
	char[] patch = [ 0x41, 0x41, 0x41, 0x41, 0x41 ];

	file.write(patch);
	file.close();

	writeln("press enter to exit");
	getchar();
	return 0;
}

gives me this output (the following line is the content of test.txt)
|   AAAAA

As you can see there are another 5 characters right before the five 'A'.
It seems that D fails with the proper encoding?

Thansk for help

file.write writes the length of the array, which is what you see:

    Writes a string, together with its length.
    The format is implementation-specific and should only be used in conjunction with read. Throw WriteException on error.

fix: file.writeString(patch);

(BTW, notice that use of std.stream is not recommended)

On Thursday, 28 November 2013 at 00:05:24 UTC, Luís Marques wrote:
> file.write writes the length of the array, which is what you see:
>
>     Writes a string, together with its length.
>     The format is implementation-specific and should only be used in conjunction with read. Throw WriteException on error.
>
> fix: file.writeString(patch);
>
> (BTW, notice that use of std.stream is not recommended)

Hi

thanks for your answer.
I need to use streams because i need to set the file pointer in order to apply a binary edit within an executable.

What would you recommend me, knowing this?

thank you

On Thursday, 28 November 2013 at 00:15:48 UTC, alkololl wrote:
> What would you recommend me, knowing this?

Maybe use the core.stdc.stdio (.seek, etc.) ?

On Thursday, 28 November 2013 at 00:29:26 UTC, Luís Marques wrote:
> On Thursday, 28 November 2013 at 00:15:48 UTC, alkololl wrote:
>> What would you recommend me, knowing this?
>
> Maybe use the core.stdc.stdio (.seek, etc.) ?

Okay, thank you so much.
Is there any good lecture you can recommend me reading?

Unfortunately, I dont think I have understood 10% of D

On Thursday, 28 November 2013 at 00:39:39 UTC, alkololl wrote:
> Is there any good lecture you can recommend me reading?

Ali Çehreli's book is online, in HTML (http://ddili.org/ders/d.en/index.html) and PDF (http://ddili.org/ders/d.en/Programming_in_D.pdf).

You can also look for Andrei Alexandrescu's book, The D Programming Language, which is quite a nice reading, although *slightly* out of date.

For many years I was not aware of D's IRC channel in EFnet, #d. Go there, the people are really nice, and it's useful for quick questions. You might also want to post in D.learn.