Couldn't you periodically (every N iterations) save the array to disk? Or 
even better, put it in a global variable?

On Tuesday, November 10, 2015 at 5:07:17 AM UTC-5, Felipe Jiménez wrote:
>
> I have a long loop going. It solves a solitaire board-game by brute force 
> search, and depending on the initial configuration it could take seconds or 
> years to finish, I never know.
>
> I would like to be able to interrupt the loop at any time and save its 
> state (basically the values in an Array the loop operates on). That would 
> allow me to resume the loop later from where it left, instead of starting 
> all over again.
>
> Of course Ctrl-C is no good because I lose the state of the loop. My idea 
> is something like:
>
>    while true
>       # do stuff #
>       if (keyboard was pressed) && (key was 'p')      # for "pause"
>          save Array to hard disk
>          return
>       end
>    end
>
> But I don't know how to check if "keyboard was pressed" and what key it 
> was. I cannot use  chomp(readline())  because this waits until the user 
> hits Enter, which stops the loop going (unless I leave a spoon pressing the 
> Enter key :-). I need something that looks at the keyboard stack to see if 
> a key was recently pressed, and if none was pressed, it does nothing and 
> lets the loop continue without delay.
>
> I normally work at the REPL.
>
> Any ideas?
>
> Like always, sorry if my Q is too basic, but I did check the documentation 
> and the web and could not solve it.
> And a big thank you to the Julia developers and community. I am loving it.
>

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