C struct construct question

[Lennart Sorensen]

On Tue, Apr 18, 2006 at 09:50:12AM +0300, Peter wrote:
> 
> Hi all,
> 
> I found an unusual C construct in Asterisk source code and I am looking 
> for an explanation. Of course I cannot find one online. Here is a quote:
> 
> static const struct ast_channel_tech local_tech = {
>         .type = type,
>         .description = tdesc,
>         .capabilities = -1,
>         .requester = local_request,
>         .send_digit = local_digit,
> 	.call = local_call,
>         .hangup = local_hangup,
>         .answer = local_answer,
>         .read = local_read,
>         .write = local_write,
>         .exception = local_read,
>         .indicate = local_indicate,
>         .fixup = local_fixup,
>         .send_html = local_sendhtml, 
> };
> 
> how does this work ? References ?

I think it is creating a static contant structure named local_tech of
type 'strict ast_channel_tech' and initializing the contants by
specifying which members of the struct to set to what value.  Given you
use local_tech.type to access it, it makes sense to be allowed to do
.type = type when initializing it.

Len Sorensen
--
The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml