mixin creating an enum

Robert Fraser fraserofthenight at gmail.com
Fri May 23 05:02:14 PDT 2008


Hendrik Renken wrote:
> Hi,
> 
> i have a struct containing "attributes" identified by int-ids:
> 
> struct Foo
> {
>     char[uint] attributes;
> }
> 
> 
> I would like to use instead of the int-ids an enum, since the range of 
> the ids is strict and cannot change. And i want this struct to be 
> generic. So what i need would be a mixin template, which i give the enum 
> -members and the template generates the enum.
> 
> struct Foo(char[] enummembers)
> {
>     enum Bar
>     {
>          mixin enummembers;
>     }
> 
>     char[][] attributes;
> }
> 
> Now i would be able to address the attributes by the enum-members. Is 
> that possible? Since i couldn't find anythiong close in the docs or in 
> the Wiki4D or in the dsource tutorials

struct Foo(char[] enumMembers)
{
     mixin("enum Bar {" ~ enumMembers ~ "}");
     char[][Bar] attributes;
}

...?

If enumMembers isn't in the exact correct form, you'll probably need a 
string function to get it there.


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