R help - Apr 2005 - g.data version 1.6, upgrade in response to changes in R-2.1.0

Version 1.6 of the "g.data" package is available on CRAN.
The "g.data" package is used to create and maintain delayed-data
packages (DDP's). Data stored in a DDP are available on demand, but do
not take up memory until requested. You attach a DDP with
g.data.attach(), then read from it and assign to it in a manner similar
to S-Plus, except that you must run g.data.save() to actually commit to
disk.
This new version uses delayedAssign (new to R-2.1.0) instead of delay
(deprecated in R-2.1.0).  If it detects you are using R-2.1.0 or higher,
it will automatically upgrade older DDP's.  Version 1.6 of
"g.data" will
still work fine under earlier versions of R too.  Note, however, that
once you upgrade an older DDP (by g.data.attach'ing it under R-2.1.0),
it will no longer be readable by earlier versions of R (which do not
understand delayedAssign), so users running multiple versions of R may
want to avoid this upgrade.  Please contact me if this presents a
problem.

-- David Brahm (brahm@alum.mit.edu)


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