On Monday, 9 November 2015 at 22:41:50 UTC, Brian Schott wrote:
Given the following code:
```
import std.meta;
static assert(is(char : dchar));
static assert(is(AliasSeq!(int, char) : AliasSeq!(int, char)));
static assert(is(AliasSeq!(int, char) : AliasSeq!(int, dchar)));
```
The third static assert fails. Should it, given that the first
and second pass?
`:` in `is` is for testing whether the left type is implicitly
convertible to the right type. `char` is implicitly convertible
to `dchar` by promoting it. But `AliasSeq`s are collections;
they're only implicitly convertible to themselves.
