I'm sure this has come up before, but I want to store something like an std.array appender in a class.  All of the examples use auto for the type but you can't put that in a class definition, so what do you put?

Example:
class packet{...}

class A {

   packet []  packetlist;
   appender!(packet) packappender;   // wrong format

   this () {
      packetlist = new packet[0];
      packappender = appender(&packetlist);
   }
   :
}

What's the format to store the appender in the class?

On Friday, July 02, 2010 09:46:37 Rob Adelberg wrote:
> I'm sure this has come up before, but I want to store something like an std.array appender in a class.  All of the examples use auto for the type but you can't put that in a class definition, so what do you put?
> 
> Example:
> class packet{...}
> 
> class A {
> 
>    packet []  packetlist;
>    appender!(packet) packappender;   // wrong format
> 
>    this () {
>       packetlist = new packet[0];
>       packappender = appender(&packetlist);
>    }
> 
> }
> 
> What's the format to store the appender in the class?

In this case, the type would be Appender!(packet[]). However, if you ever want to know the exact type of something, one way to do it is something like this:

writeln(typeid(appender(&packelist)));

It will print out the type of the expression for you.

- Jonathan M Davis

Hello Jonathan,

> On Friday, July 02, 2010 09:46:37 Rob Adelberg wrote:
> 
>> I'm sure this has come up before, but I want to store something like
>> an std.array appender in a class.  All of the examples use auto for
>> the type but you can't put that in a class definition, so what do you
>> put?
>> 
>> Example:
>> class packet{...}
>> class A {
>> 
>> packet []  packetlist;
>> appender!(packet) packappender;   // wrong format
>> this () {
>> packetlist = new packet[0];
>> packappender = appender(&packetlist);
>> }
>> }
>> 
>> What's the format to store the appender in the class?
>> 
> In this case, the type would be Appender!(packet[]). However, if you
> ever want to know the exact type of something, one way to do it is
> something like this:
> 
> writeln(typeid(appender(&packelist)));
> 
> It will print out the type of the expression for you.
> 

or you can get it at compile time:

pragma(msg, typeof(exp).stringof);



> - Jonathan M Davis
> 
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