On Sat, Oct 1, 2011 at 11:34 AM, Olivier Delalleau <shish@keba.be> wrote:
It'll work, it is equivalent to the suggestion I made in my previous post with the f_inplace wrapper function (and it has the same drawback that numpy will allocate temporary memory, which wouldn't be the case if f was working in-place directly, by implementing it as "arr *= 2").

Note that you don't need to write x[:] * 2, you can write x * 2 directly.

Or even x *= 2