if (doc.timestampField < older) { collection.remove(doc); } })
var older=Date.parse("2013-03-01"), all=collection.find();
all.forEach(function(doc) { var ts = doc._id.getTimestamp();
if (ts < older) { collection.remove(doc); } });
if (doc.timestampField < older) { collection.remove(doc); } })
var older=Date.parse("2013-03-01"), all=collection.find();
all.forEach(function(doc) { var ts = doc._id.getTimestamp();
if (ts < older) { collection.remove(doc); } });