[Numpy-discussion] faster code

[Francesc Alted]

A Sunday 16 May 2010 21:14:34 Davide Lasagna escrigué:
> Hi all,
> 
> What is the fastest and lowest memory consumption way to compute this?
> 
> y = np.arange(2**24)
> bases = y[1:] + y[:-1]
> 
> Actually it is already quite fast, but i'm not sure whether it is occupying
> some temporary memory
> is the summation. Any help is appreciated.

Both y[1:] and y[:-1] are views of the original y array, so you are not 
wasting temporary space here.  So, as I see this, the above idiom is as 
efficient as it can get in terms of memory usage.

-- 
Francesc Alted