• Lars Holowko (12/12) Feb 28 2011 Hi
• Denis Koroskin (6/18) Feb 28 2011 Here you go:
• Lars Holowko (3/16) Feb 28 2011 Thanks Denis and Trass3r,
• Trass3r (1/6) Feb 28 2011 auto darray = buffer[0 .. buf_len]

Lars Holowko <lars.holowko gmail.com> writes:

Hi

I am trying to implement a D2 function that has this C signature (it
gets called from a C module and I cannot change the caller):

extern(C) read_into(char *buffer, size_t buf_len);

I would like to use D's vector (or array-wise according to TDPL)
operations on buffer but I cannot find a way, how I could initialize a
(static?) D array and tell it to use buffer as its memory. Obviously I
don't want to copy buffer in a regular D array to be able to do the
manipulations and than having to copy everything back into buffer.

Is there any way to get this accomplished?


Thanks,

Lars

"Denis Koroskin" <2korden gmail.com> writes:

On Mon, 28 Feb 2011 19:51:28 +0300, Lars Holowko <lars.holowko gmail.com>  
wrote:

 Hi

 I am trying to implement a D2 function that has this C signature (it
 gets called from a C module and I cannot change the caller):

 extern(C) read_into(char *buffer, size_t buf_len);

 I would like to use D's vector (or array-wise according to TDPL)
 operations on buffer but I cannot find a way, how I could initialize a
 (static?) D array and tell it to use buffer as its memory. Obviously I
 don't want to copy buffer in a regular D array to be able to do the
 manipulations and than having to copy everything back into buffer.

 Is there any way to get this accomplished?


 Thanks,

 Lars

Here you go:

auto arr = buffer[0..buf_len];

Now you can operate on this array however you like. E.g.

arr[] = 0; // initialize with zeros

Lars Holowko <lars.holowko gmail.com> writes:

On 2/28/2011 10:15 AM, Denis Koroskin wrote:
 On Mon, 28 Feb 2011 19:51:28 +0300, Lars Holowko
 <lars.holowko gmail.com> wrote:

 gets called from a C module and I cannot change the caller):

 extern(C) read_into(char *buffer, size_t buf_len);

 I would like to use D's vector (or array-wise according to TDPL)
 operations on buffer but I cannot find a way, how I could initialize a
 (static?) D array and tell it to use buffer as its memory. Obviously I

 Here you go:

 auto arr = buffer[0..buf_len];

 Now you can operate on this array however you like. E.g.

 arr[] = 0; // initialize with zeros

Thanks Denis and Trass3r,

that was embarrasingly easy ;-)

Trass3r <un known.com> writes:

 I am trying to implement a D2 function that has this C signature (it
 gets called from a C module and I cannot change the caller):

 extern(C) read_into(char *buffer, size_t buf_len);

 I would like to use D's vector (or array-wise according to TDPL)
 operations on buffer but I cannot find a way, how I could initialize a

auto darray = buffer[0 .. buf_len]