`*FlatIterator` Support For ColMajor
chewxy opened this issue · 0 comments
chewxy commented
The *FlatIterator type implements Iterator, which is an interface for stateful iterators. It also supports reverse iteration (by means of the .SetReverse() method).
Currently, the *FlatIterator type supports the following operations
| - | Row Major Vector | Col Major Vector | Row Major N-DImensional | Col Major N-Dimensional |
|---|---|---|---|---|
Forward Next() |
✓ | ✓ | ✓ | ✓ |
Backward Next() |
✓ | ✓ | ✓ | ✗ |
Forward NextValidity() |
✓ | ✓ | ✓ | ✓ |
Backward NextValidity() |
✓ | ✓ | ✓ | ✗ |
Forward NextValid() |
✓ | ✓ | ✓ | ✓ |
Backward NextValid() |
✓ | ✓ | ✓ | ✗ |
Forward NextInvalid() |
✓ | ✓ | ✓ | ✓ |
Backward NextInvalid() |
✓ | ✓ | ✓ | ✗ |
A major internal method that underpins all of these are .ndNext() and .ndPrevious(). The corresponding col-major version are .colMajorNDnext() and .colMajorNDPrevious().
.colMajorNDPrevious() is not implemented. It can be found at Line 402 of iterator.go