Phobos' std.conv.to-conversion from enum to string doesn't scale beyond hundreds of enumerators

[Timoses]

On Monday, 25 June 2018 at 00:35:40 UTC, Jonathan M Davis wrote:
> On Sunday, June 24, 2018 23:53:09 Timoses via Digitalmars-d 
> wrote:
>> On Sunday, 24 June 2018 at 23:34:49 UTC, Per Nordlöw wrote:
>> > Provided that
>> >
>> >     __traits(allMembers, E)
>> >
>> > is a cheap operation as it's called once for every 
>> > enumerator. I could get it out of the loop; if I do as
>> >
>> >     @property string toString() @safe pure nothrow @nogc
>> >     {
>> >
>> >         final switch (_enum)
>> >         {
>> >
>> >             enum members = __traits(allMembers, E);
>>
>> enum members = [_traits(allMembers, E)];
>>
>> seems to work
>
> Or if you want it to stay an AliasSeq, then just use Alias or 
> AliasSeq on it. e.g.
>
> alias members = AliasSeq!(__traits(allMembers, E));
>
> Given that the result of __traits in this case is an AliasSeq, 
> I have no idea why the gramar doesn't allow you to just use the 
> result of __traits directly as an AliasSeq with something like
>
> alias members = __traits(allMembers, E);
>
> but it doesn't. So, you have to wrap it, dumb as that may be. 
> There's a bug report about it in bugzilla somewhere.

https://issues.dlang.org/show_bug.cgi?id=16390

I guess? First search result : D