Hello,
While fixing some warnings I have noticed an inconsistency in the type of
strides.
matrices/vectors use difference_type
traits::stride use size_type
This is a serious warnings because it leaves an ambiguity on negative
strides.
I think that negative strides should be allowed, as it allows to simply
"reverse" a vector: (by using range(N, N), stride = -1). But I'm not sure
our assertions (or the rest of the core) would actually properly support it.
I think we should use difference type, anyway, since strides are
conceptually differences.
Philippe
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