Compare TypeTuple element with another type

[John Colvin via Digitalmars-d]

On Friday, 1 August 2014 at 10:25:39 UTC, Tudor Berariu wrote:
> Is it possible to compare at compile time an element from a 
> TypeTuple with another type?
>
> This code fails:
>
>     alias T = Tuple!(int, bool);
>     static assert(is(T[0] == int));
>
>
>     Error: static assert  (is(Tuple!(int, bool)[0] == int)) is 
> false
>
>
> Tudor

alias T = TypeTuple!(int, bool);
static assert(is(T[0] == int));

or

alias T = Tuple!(int, bool);
static assert(is(typeof(T.expand)[0] == int));