Hello wise ones,

When I alter the (scalar)-dereferenced value in an element of a tied array, does that effect a write to file? Or must I explicitly use an array function to get that write -- ie overwrite by assignment the element's value with itself?

For example: 

tie @atied ...;
my $a1ref = \$atied[1]; # can I do this? .. if so ..
$$a1ref =~ s/a/z/;    # does this write the tied file?
$atied[1] = $$a1ref;  # or MUST I do this to write?

[download]

I am puzzled here. Any thoughts appreciated.

pstack

ok .. the follow up question that draws closer to my deeper interest is as to whether I subvert the gains of Tie::File with the following: 

tie @atied ...;
my @recs;
for $a (@atied) {push @recs, \$a;}
... later ...
for $a (@recs} {$$a =~ s/a/z/;}

[download]

ie .. while @recs persists is the whole file in memory?

pstack

In reply to Tie::File query by Pstack

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