• cal (3/3) Sep 09 2012 When using __traits(allMembers), I'd like to be able to detect if
• Jonathan M Davis (12/15) Sep 09 2012 No. As far as the compiler is concerned, there is no difference between ...
• cal (15/22) Sep 09 2012 Played around a bit, and this _seems_ to work:

"cal" <callumenator gmail.com> writes:

When using __traits(allMembers), I'd like to be able to detect if 
a given member is an alias (and get the member that is aliased). 
Is there a way to do this currently?

Jonathan M Davis <jmdavisProg gmx.com> writes:

On Monday, September 10, 2012 05:01:05 cal wrote:
 __traits(allMembers), I'd like to be able to detect if 
 a given member is an alias (and get the member that is aliased). 
 Is there a way to do this currently?

No. As far as the compiler is concerned, there is no difference between an 
alias and what it's aliased from.

Now, if you're talking about alias this in particular rather than a type or 
variable, that's a bit different, because it only gets used if the non-alias 
stuff doesn't work. If that's the case, you _might_ be able to determine 
whether something is using alias this by checking that == on the type fails 
and : succeeds (since aside from built-in types, the only times that implicit 
conversions exist are via inheritance or alias this), but that won't tell you 
_what_ was aliased to this. I don't think that there's any way to determine 
that.

- Jonathan M Davis

"cal" <callumenator gmail.com> writes:

On Monday, 10 September 2012 at 03:30:25 UTC, Jonathan M Davis 
wrote:
 On Monday, September 10, 2012 05:01:05 cal wrote:
 __traits(allMembers), I'd like to be able to detect if a given 
 member is an alias (and get the member that is aliased). Is 
 there a way to do this currently?

 No. As far as the compiler is concerned, there is no difference 
 between an
 alias and what it's aliased from.

Played around a bit, and this _seems_ to work:

// Detect alias
foreach(member; __traits(allMembers, l.main))
{
    static if (__traits(compiles, __traits(identifier, 
mixin(member))))
    {
       string ident = __traits(identifier, mixin(member));
       if (ident != member)
         /// Detected an alias
    }
}

But I wonder if this is reliable.