Choosing between enum arrays or AliasSeqs

[Nordlöw via Digitalmars-d-learn]

On Thursday, 24 August 2017 at 22:38:29 UTC, Meta wrote:
> https://dlang.org/phobos/std_meta.html#aliasSeqOf

Thanks!

Your advice led to the following sample solution

import std.meta : aliasSeqOf;
immutable englishIndefiniteArticles = [`a`, `an`];
bool isEnglishIndefiniteArticle(S)(S s)
{
     return 
cast(bool)s.among!(aliasSeqOf!englishIndefiniteArticles);
}

Is this the preferred way?

Could a template-parameter overload to `among` (perhaps calling 
it something slighty different) be defined that takes an 
immutable array as argument to prevent the conversion to the 
`AliasSeq` prior to the call?

More here:

https://github.com/nordlow/phobos-next/blob/c7d9a0f9c3280fc7852584ee2be387646a5f7857/src/grammar.d#L49