--- Paul <[EMAIL PROTECTED]> wrote:
>
> --- Tom Allison <[EMAIL PROTECTED]> wrote:
> > My first guess is to use "tie" to access a file of type DB_File.
> > The number of records is small <1000 but the record structure is
> > going to be either a hash of hashes, hash of arrays, or similar.
>
> One possible solution depends on your data structure.
> Frequently hashes of hashes are convenient, but can
> eat up a lot of memory and program speed when they
> get large. On the other hand, if your keys allow it,
> you can often compund the *keys* and end up with a
> single hash, which is easily storable via DBM. e.g.:
>
> my %h;
> for my $l ('a'..'z') {
> for my $n (0..9) {
> $h{$l}{$n} = $someData;
> }
> }
>
> That's hard to store with a DBM because the hash is in layers.
> but:
>
> my %h;
> for my $l ('a'..'z') {
> for my $n (0..9) {
> $h{"$l\t$n"} = $someData;
> }
> }
>
> That stores easily in a DBM, and only requires that you
> correctly rebuild the key later. Use a standard delimiter
> (I like tabs, but there are all sorts of options) and
> you can read the keys and use split() to extract pieces,
> etc.
>
> HTH,
> Paul
>
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