[SciPy-dev] Arrays and matrices share memory?
stephen.walton at csun.edu
Wed Oct 19 17:31:27 CDT 2005
Travis Oliphant wrote:
>Ah, good catch. Yes, I believe that mat(A) shares the same data with
>A. If this was not the default previously, then it needs to change.
Copy was the default previously. If you look at Matrix.py in Numeric
23.8, you'll see the default value of copy in the __init__ method of the
Matrix class is 1, while it is presently 0 in the __new__ method of the
new matrix class. Changing this allows expm3 and friends to work
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