[DUG] Saving aray

[Leigh Wanstead]

Hi John,

I would not bother that much. Just save to csv should be fine.

1.5 million is not that much. 1 billion might be more interesting. :-)

Otherwise save as record as binary file.

Regards
Leigh


On 7 July 2014 20:35, John Bird <johnkbird at paradise.net.nz> wrote:

>   I have a program that builds a very large array (over 1,500,000) of
> integers, and the calculation to fill the array takes quite a while –
> around 40-50 secs.   If there is a quick way to do it, I would save the
> array to disk if it was faster than recalculating it the next time.
>
> I am guessing that writing the elements to strings and using CSV etc would
> be quite slow, as it involves quite a lot of processing.   I will run a
> test to see.
>
> Is there any really fast way to save such an array to disk?   The numbers
> range between 0 and 256 if that helps.
>
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