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$OpenBSD: OpenBSD::IdCache.pod,v 1.1 2005/02/28 13:08:41 espie Exp $
=head1 NAME
OpenBSD::IdCache - cache for uid and gid look-ups
=head1 SYNOPSIS
use OpenBSD::IdCache;
my $ucache = new OpenBSD::UidCache;
my $uid = $ucache->lookup("espie");
my $gcache = new OpenBSD::GidCache;
my $gid = $gcache->lookup("wheel", 0);
=head1 DESCRIPTION
C<OpenBSD::IdCache> provides two classes: C<OpenBSD::UidCache>, for UIDs,
and C<OpenBSD::GidCache> for GIDs.
C<UidCache::new> creates a UID cache, which can be used to look up user
names by using the C<lookup> method. Looking up a numeric user name
is a no-op. Non-existing IDs return a default value, which is normally
C<undef> but can be provided as an extra argument to C<lookup>.
C<GidCache::new> provides the same service for GIDs.
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