Little quiz

[Kagamin]

bearophile Wrote:

> A little quiz for people here: guess the output of this little D2 program (it compiles correctly and doesn't crash at run time, so it's a fair question):
> 
> 
> import std.typecons: tuple;
> import std.c.stdio: printf;
> 
> auto foo() {
>     printf("foo\n");
>     return tuple(1, 2);
> }
> 
> void main() {
>     foreach (x; foo().tupleof)
>         printf("%d\n", x);
> }
> 
> 
> Bye,
> bearophile

According to docs tupleof returns type tuple, but TypeTuple doesn't seem to be iteratable.