Hi,

I have a array of ubyte-s and need to cast for example from 4-th element to 8-th element into int, anyone knows how to do that?

example:

ubyte buffer[1024];

listener.receiveFrom(buffer, address);

writefln("Transaction ID: %s", cast(int)buffer[4 .. 8]);


Thanks.

On Fri, 17 Nov 2006 14:01:50 +0100, Boris Shomodjvarac <shomodj.N@SPAM.slashmail.org> wrote:

>
>Hi,
>
>I have a array of ubyte-s and need to cast for example from 4-th element to 8-th element into int, anyone knows how to do that?
>
>example:
>
>ubyte buffer[1024];
>
>listener.receiveFrom(buffer, address);
>
>writefln("Transaction ID: %s", cast(int)buffer[4 .. 8]);
>
>
>Thanks.

*cast(int*)&buffer[4]
or
*cast(int*)(buffer.ptr + 4)

Boris Shomodjvarac wrote:
> Hi,
> 
> I have a array of ubyte-s and need to cast for example from 4-th element
> to 8-th element into int, anyone knows how to do that? 
> 
> example:
> 
> ubyte buffer[1024];
> 
> listener.receiveFrom(buffer, address);
> 
> writefln("Transaction ID: %s", cast(int)buffer[4 .. 8]);
> 
> 
> Thanks.

*cast(int*)&buffer[4];

But you better be sure the endianness of the data is the same as the platform you're reading it on.

--bb

Boris Shomodjvarac wrote:
> Hi,
> 
> I have a array of ubyte-s and need to cast for example from 4-th element
> to 8-th element into int, anyone knows how to do that? 
> 
> example:
> 
> ubyte buffer[1024];
> 
> listener.receiveFrom(buffer, address);
> 
> writefln("Transaction ID: %s", cast(int)buffer[4 .. 8]);
> 
> Thanks.

An array cannot be converted to an int.  An array of bytes can, however, be converted to an array of ints.

    (cast(int[]) cast(void[]) buffer[4..8]) [0]

If your data needs to be portable between big-endian and little-endian platforms, you'll need to be a bit more careful.

Stewart.

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My e-mail is valid but not my primary mailbox.  Please keep replies on the 'group where everyone may benefit.

On Fri, 17 Nov 2006 15:30:53 +0200, Max Samuha wrote:

> On Fri, 17 Nov 2006 14:01:50 +0100, Boris Shomodjvarac <shomodj.N@SPAM.slashmail.org> wrote:
> 
>>
>>Hi,
>>
>>I have a array of ubyte-s and need to cast for example from 4-th element to 8-th element into int, anyone knows how to do that?
>>
>>example:
>>
>>ubyte buffer[1024];
>>
>>listener.receiveFrom(buffer, address);
>>
>>writefln("Transaction ID: %s", cast(int)buffer[4 .. 8]);
>>
>>
>>Thanks.
> 
> *cast(int*)&buffer[4]
> or
> *cast(int*)(buffer.ptr + 4)

Thanks it works :) I also want to thank Bill and Gordon...