Re: Pointers and offsets

[Mike Parker via Digitalmars-d-learn]

On 1/14/2015 10:17 AM, Bauss wrote:
On Wednesday, 14 January 2015 at 01:16:54 UTC, Bauss wrote:
Is it possible to access a pointer by its offsets.
Ex. write a 32bit integer to a byte pointer at ex. offset 4.
To give an example in C# you can do this:
fixed (byte* Packet = Buffer) // Buffer would be a byte array

And then to set the value of a specific offset
*((TYPE*)(Packet + OFFSET))

Where TYPE could be replaced by ex. uint and OFFSET by 4

I tried to look here:
http://dlang.org/arrays.html

But couldn't seem to find anything like it.

Can't seem to edit OP so at:

The forum is a web interface to a newsgroup, which also has a mailing 
list interface. So no, no editing.

*((TYPE*)(Packet + OFFSET))

It should be:
*((TYPE*)(Packet + OFFSET)) = VALUE;

VALUE has to be of the same type as TYPE of course.

void main()
{
    ubyte[16] bytes;
    for( int i=0; i<4; ++i )
    {
        *(cast( int* )( bytes.ptr + (i*4))) = i;
    }

    import std.stdio : writeln;
    writeln( cast( int[] )bytes );
}