Don't treat Q's like easily readable arrays #725
Merged
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This came up in a nanosoldier run in JuliaLang/julia#46196. Independently from that PR, this usage of
revert
here is supposedly really slow, because there's no quickgetindex
forqr(A).Q
s. I added calls toMatrix
, which may yield rectangular matrices in the tall case. I'll propose another solution below if you insist on the square representation.