On Wednesday, 16 December 2015 at 20:43:02 UTC, Jack Stouffer
wrote:
unittest
{
static assert(isInputRange!(ReferenceInputRange!int)); //
works
static assert(isForwardRange!(ReferenceForwardRange!int));
// works
static
I'm trying to add a ReferenceBidirectionalRange range type to
std.internal.test.dummyrange so I can test some range code I'm
writing, but I've hit a wall and I'm not sure why. For some
reason, the isBidirectionalRange check fails even though back and
popBack are present. Any help here would be
On 16.12.2015 21:43, Jack Stouffer wrote:
I'm trying to add a ReferenceBidirectionalRange range type to
std.internal.test.dummyrange so I can test some range code I'm writing,
but I've hit a wall and I'm not sure why. For some reason, the
isBidirectionalRange check fails even though back and
On Wednesday, 16 December 2015 at 21:40:44 UTC, anonymous wrote:
The `.save` primitive of forward ranges must return the very
same type that the range has. But your
ReferenceBidirectionalRange!T.save returns a
ReferenceForwardRange!T, because it's inherited. That makes
On Wednesday, 16 December 2015 at 20:43:02 UTC, Jack Stouffer
wrote:
...
You can also use return type covariance:
class ReferenceBidirectionalRange(T) : ReferenceForwardRange!T
{
this(Range)(Range r) if (isInputRange!Range) { super(r); }
final override @property typeof(this) save() {
