opCmp and unittest as a nested function

[Alexandr Druzhinin]

09.04.2014 13:55, bearophile пишет:
> And you need to use opEquals:
>
> unittest {
>      static struct Point2D {
>          double x, y;
>
>          bool opEquals(const Point2D rhs) const {
>              return false;
>          }
>      }
>
>      auto p2d0 = Point2D(0, 0);
>      auto p2d1 = Point2D(1, 0);
>
>      assert(tween(p2d0, p2d1, 1 / 3.0) == Point2D(1 / 3.0, 0));
> }
>
>
> opEquals/onHash/opCmp are minefields. I don't know why the D compiler
> doesn't add a large amount of errors and warnings to turns this
> minefield in something a bit safer.
It would be very nice.
>
> Also use std.math.feqrel to compare floating point values.
Thanks!
>
> Bye,
> bearophile