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Best practices for writing data to disk.

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John E.

Best practices for writing data to disk.

I'm having trouble finding out if classic squeak methods work in this case.

Can anyone recommend a best practice if I have an object that holds a
large, procedurally created, orderedCollection and I want to be able
to read/write it from a file (text or binary)?

Specifically. I have an object called "PrimeBank", that holds a huge
set of prime numbers. Its methods can grow this set at any time. As
the set gets larger, I'd like to be able to write it out to a file and
read it in when I'm running the code on another image.

Ideally I think I'd like the file to be human readable and editable.

- John E.

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csrabak

Re: Best practices for writing data to disk.

John,

Your description seems to point to a simple streaming over your collection would suffice (e.g SBE 10.3 to 10.4).

Are you observing any perfomance hit or something else?

Em 17/08/2009 07:49, John Escobedo < [hidden email] > escreveu:

I'm having trouble finding out if classic squeak methods work in this case.

Can anyone recommend a best practice if I have an object that holds a
large, procedurally created, orderedCollection and I want to be able
to read/write it from a file (text or binary)?

Specifically. I have an object called "PrimeBank", that holds a huge
set of prime numbers. Its methods can grow this set at any time. As
the set gets larger, I'd like to be able to write it out to a file and
read it in when I'm running the code on another image.

Ideally I think I'd like the file to be human readable and editable.

- John E.

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< br />

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Stéphane Ducasse

Re: Best practices for writing data to disk.

In reply to this post by John E.

for simple matter
you can use storeOn:/ readFrom protocol
store one element per line
and use readFrom: one each line to load back

On Aug 17, 2009, at 12:49 PM, John Escobedo wrote:

> I'm having trouble finding out if classic squeak methods work in
> this case.
>
> Can anyone recommend a best practice if I have an object that holds a
> large, procedurally created, orderedCollection and I want to be able
> to read/write it from a file (text or binary)?
>
> Specifically. I have an object called "PrimeBank", that holds a huge
> set of prime numbers. Its methods can grow this set at any time. As
> the set gets larger, I'd like to be able to write it out to a file and
> read it in when I'm running the code on another image.
>
> Ideally I think I'd like the file to be human readable and editable.
>
> - John E.
>
> _______________________________________________
> Pharo-project mailing list
> [hidden email]
> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

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