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Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/tb-usercake/models/config.php on line 51
static Collection collectionMinusSet(Collection l, Collection stuff) { if (empty(stuff)) ret l; Set set = asSet(stuff); Collection l2 = similarEmptyCollection(l); for (A a : l) if (!set.contains(a)) l2.add(a); ret l2; }