Add size(::LinearIndices) method #25541
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Fixes indexing LinearIndices with an array. This is useful in particular to convert cartesian indices that find() now returns to linear indices.
timholy
approved these changes
Jan 13, 2018
| # AbstractArray implementation | ||
| Base.IndexStyle(::Type{LinearIndices{N,R}}) where {N,R} = IndexCartesian() | ||
| Base.axes(iter::LinearIndices{N,R}) where {N,R} = iter.indices | ||
| Base.size(iter::LinearIndices{N,R}) where {N,R} = length.(iter.indices) |
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At present we have the recommendation to not implement size for arrays that use non-1 indexing, and so perhaps you should restrict this to OneTo indices. But as part of #24899 (which I will tackle once we stop making breaking changes) that restriction will go away, and I for one do not object if you just keep this the way it is.
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Fixes indexing
LinearIndiceswith an array. This is useful in particular to convert cartesian indices thatfindnow returns to linear indices.