#dbugfix Issue 16486 200$

[9il]

Hello,

Bugfix for the Issue 16486 [1] (originally [2]) is required for 
mir-algorithm types [3], [4].

For example, packed triangular matrix can be represented as

Slice!(Contiguous, [1], StairsIterator!(T*))
Slice!(Contiguous, [1], 
RetroIterator!(MapIterator!(StairsIterator!(RetroIterator!(T*)), 
retro)))

They are used in mir-lapack [5]. The bug fix also required for 
mir (Sparse, CompressedTensor), and for the future Dlang image 
library.

Workarounds aren't interesting.

200$  - bounty ( I can pay directly or transfer money to the 
Dlang Foundation )

Best Regards,
Ilya Yaroshenko

[1] https://issues.dlang.org/show_bug.cgi?id=16486
[2] https://issues.dlang.org/show_bug.cgi?id=16465
[3] 
http://docs.algorithm.dlang.io/latest/mir_ndslice_slice.html#Slice
[4] http://docs.algorithm.dlang.io/latest/mir_series.html#Series
[5] 
https://github.com/libmir/mir-lapack/blob/master/source/mir/lapack.d