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8.94. fields
Pragma that
provides the ability to define class fields at compile time by
updating the %FIELDS hash in the calling package.
The %FIELDS hash is set up at compile time as
well; use the base pragma to copy fields from base
classes, and then fields to add new fields. Lets
you have objects with named fields that are as compact and fast as
arrays to access. For more details, see the
fields manpage and the pseudo-hash section of
the perlref manpage.
