Casts value v to type T.

int i =  cast(int)(foo * bar);
int i = castTo!int(foo * bar);

int j = cast(int) round(floatValue);
int j = round(floatValue).castTo!int;

int k = cast(int) floatValue  + foobar;
int k = floatValue.castTo!int + foobar;

auto m = Point(
	cast(int) calc(a.x, b.x),
	cast(int) calc(a.y, b.y),
);
auto m = Point(
	calc(a.x, b.x).castTo!int,
	calc(a.y, b.y).castTo!int,
);